21972132

Names of 21972132

• Cardinal: 21972132 can be written as Twenty-one million, nine hundred seventy-two thousand, one hundred thirty-two.

Scientific notation

• Scientific notation: 2.1972132 × 10⁷

Factors of 21972132

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 397

Divisors of 21972132

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 9 12 13 14 18 19 21 26 28 36 38 39 42 52 57 63 76 78 84 91 114 117 126 133 156 171 182 228 234 247 252 266 273 342 353 364 399 468 494 532 546 684 706 741 798 819 988 1059 1092 1197 1412 1482 1596 1638 1729 2118 2223 2394 2471 2964 3177 3276 3458 4236 4446 4589 4788 4942 5187 6354 6707 6916 7413 8892 9178 9884 10374 12708 13414 13767 14826 15561 18356 20121 20748 22239 26828 27534 29652 31122 32123 40242 41301 44478 46949 55068 60363 62244 64246 80484 82602 87191 88956 93898 96369 120726 128492 140847 165204 174382 187796 192738 241452 261573 281694 289107 348764 385476 422541 523146 563388 578214 610337 784719 845082 1046292 1156428 1220674 1569438 1690164 1831011 2441348 3138876 3662022 5493033 7324044 10986066 21972132
• Sum of all divisors σ(n): 72159360
• Sum of proper divisors (its aliquot sum) s(n): 50187228
• 21972132 is an abundant number, because the sum of its proper divisors (50187228) is greater than itself. Its abundance is 28215096

Bases of 21972132

• Binary: 1010011110100010010100100₂
• Hexadecimal: 0x14F44A4
• Base-36: D2XT0

Squares and roots of 21972132

• 21972132 squared (21972132²) is 482774584625424
• 21972132 cubed (21972132³) is 10607586899634986683968
• The square root of 21972132 is 4687.4440796665
• The cube root of 21972132 is 280.0855690851

Scales and comparisons

• 21,972,132 seconds is equal to 36 weeks, 2 days, 7 hours, 22 minutes, 12 seconds.
• To count from 1 to 21,972,132 would take you about two weeks!

  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 21972132 cubic inches would be around 23.3 feet tall.

Recreational maths with 21972132

• 21972132 backwards is 23127912
• The number of decimal digits it has is: 8
• The sum of 21972132's digits is 27
• More coming soon!