21204372

Names of 21204372

• Cardinal: 21204372 can be written as Twenty-one million, two hundred four thousand, three hundred seventy-two.

Scientific notation

• Scientific notation: 2.1204372 × 10⁷

Factors of 21204372

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 539

Divisors of 21204372

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 12 14 17 21 28 31 34 42 51 62 68 84 93 102 119 124 186 204 217 238 357 372 434 476 479 527 651 714 868 958 1054 1302 1428 1437 1581 1916 2108 2604 2874 3162 3353 3689 5748 6324 6706 7378 8143 10059 11067 13412 14756 14849 16286 20118 22134 24429 29698 32572 40236 44268 44547 48858 57001 59396 89094 97716 103943 114002 171003 178188 207886 228004 252433 311829 342006 415772 504866 623658 684012 757299 1009732 1247316 1514598 1767031 3029196 3534062 5301093 7068124 10602186 21204372
• Sum of all divisors σ(n): 61931520
• Sum of proper divisors (its aliquot sum) s(n): 40727148
• 21204372 is an abundant number, because the sum of its proper divisors (40727148) is greater than itself. Its abundance is 19522776

Bases of 21204372

• Binary: 1010000111000110110010100₂
• Hexadecimal: 0x1438D94
• Base-36: CMHEC

Squares and roots of 21204372

• 21204372 squared (21204372²) is 449625391914384
• 21204372 cubed (21204372³) is 9534024070798390486848
• The square root of 21204372 is 4604.8205176749
• The cube root of 21204372 is 276.7845248735

Scales and comparisons

• 21,204,372 seconds is equal to 35 weeks, 10 hours, 6 minutes, 12 seconds.
• To count from 1 to 21,204,372 would take you about four days!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21204372 cubic inches would be around 23.1 feet tall.

Recreational maths with 21204372

• 21204372 backwards is 27340212
• 21204372 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21204372's digits is 21
• More coming soon!