640730272

Names of 640730272

• Cardinal: 640730272 can be written as Six hundred forty million, seven hundred thirty thousand, two hundred seventy-two.

Scientific notation

• Scientific notation: 6.40730272 × 10⁸

Factors of 640730272

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 82

Divisors of 640730272

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 7 8 13 14 16 17 26 28 32 34 43 49 52 56 68 86 91 98 104 112 119 136 172 182 196 208 221 224 238 272 301 344 364 392 416 442 476 544 559 602 637 688 728 731 784 833 884 952 1118 1204 1274 1376 1456 1462 1547 1568 1666 1768 1849 1904 2107 2236 2408 2548 2912 2924 3094 3332 3536 3698 3808 3913 4214 4472 4816 5096 5117 5848 6188 6664 7072 7396 7826 8428 8944 9503 9632 10192 10234 10829 11696 12376 12943 13328 14792 15652 16856 17888 19006 20384 20468 21658 23392 24037 24752 25886 26656 27391 29584 31304 31433 33712 35819 38012 40936 43316 48074 49504 51772 54782 59168 62608 62866 66521 67424 71638 76024 81872 86632 90601 96148 103544 109564 125216 125732 133042 143276 152048 163744 168259 173264 181202 192296 207088 219128 220031 251464 266084 286552 304096 336518 346528 362404 384592 408629 414176 438256 440062 465647 502928 532168 573104 673036 724808 769184 817258 876512 880124 931294 1005856 1064336 1146208 1177813 1346072 1449616 1540217 1634516 1760248 1862588 2128672 2355626 2692144 2860403 2899232 3080434 3269032 3520496 3725176 4711252 5384288 5720806 6160868 6538064 7040992 7450352 9422504 11441612 12321736 13076128 14900704 18845008 20022821 22883224 24643472 37690016 40045642 45766448 49286944 80091284 91532896 160182568 320365136 640730272
• Sum of all divisors σ(n): 1713036276
• Sum of proper divisors (its aliquot sum) s(n): 1072306004
• 640730272 is an abundant number, because the sum of its proper divisors (1072306004) is greater than itself. Its abundance is 431575732

Bases of 640730272

• Binary: 100110001100001100010010100000₂
• Hexadecimal: 0x2630C4A0
• Base-36: ALH2N4

Squares and roots of 640730272

• 640730272 squared (640730272²) is 410535281457193984
• 640730272 cubed (640730272³) is 263042382553664457725083648
• The square root of 640730272 is 25312.6504341209
• The cube root of 640730272 is 862.1015271159

Scales and comparisons

• 640,730,272 seconds is equal to 20 years, 19 weeks, 2 days, 20 hours, 37 minutes, 52 seconds.
• To count from 1 to 640,730,272 would take you about thirty years!

  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 640730272 cubic inches would be around 71.8 feet tall.

Recreational maths with 640730272

• 640730272 backwards is 272037046
• The number of decimal digits it has is: 9
• The sum of 640730272's digits is 31
• More coming soon!