30
natural number
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Summary
30 is a positive integer[1]. 30 ranks in the top 3% of positive integer entities by monthly Wikipedia readership (3,562 views/month).[2]
Key Facts
- Instance of: abundant number[3], sphenic number[4], harshad number[5], Giuga number[6], square pyramidal number[7], even number[8], pronic number[9], hendecagonal number[10], composite number[11]
- Follows: 29[12]
- Followed by: 31[13]
- Commons category: 30 (number)[14]
- Unicode character: ㉚[15], ㉊[16]
- Topic's main category: Category:30 (number)[17]
- Numeric value: 30[18]
- Code: ௩௰[19], ௩0[20], ៣០[21], XXX[22], 𒌍[23], 11110[24], 1010[25], 132[26], 110[27], 50[28], 42[29], 33[30], 36[31], 30[32]
- Prime factor: 2[33], 3[34], 5[35]
- Maintained by WikiProject: WikiProject Mathematics[36]
- Number of decimal digits: 2[37]
- Name in hiero markup: V20-V20-V20[38]
- Mathematical inverse: −30[39]
Why It Matters
30 has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.[40] 30 is known by 43 alternative names across languages and contexts.[41]