640553472

Names of 640553472

• Cardinal: 640553472 can be written as Six hundred forty million, five hundred fifty-three thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 6.40553472 × 10⁸

Factors of 640553472

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 72

Divisors of 640553472

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 17 18 24 26 32 34 36 37 39 48 51 52 64 68 72 74 78 96 102 104 111 117 128 136 144 148 153 156 192 204 208 221 222 234 256 272 288 289 296 306 312 333 384 408 416 442 444 468 481 512 544 576 578 592 612 624 629 663 666 768 816 832 867 884 888 936 962 1088 1152 1156 1184 1224 1248 1258 1326 1332 1443 1536 1632 1664 1734 1768 1776 1872 1887 1924 1989 2176 2304 2312 2368 2448 2496 2516 2601 2652 2664 2886 3264 3328 3468 3536 3552 3744 3757 3774 3848 3978 4329 4352 4608 4624 4736 4896 4992 5032 5202 5304 5328 5661 5772 6528 6656 6936 7072 7104 7488 7514 7548 7696 7956 8177 8658 8704 9248 9472 9792 9984 10064 10404 10608 10656 10693 11271 11322 11544 13056 13872 14144 14208 14976 15028 15096 15392 15912 16354 17316 18496 18944 19584 19968 20128 20808 21216 21312 21386 22542 22644 23088 24531 26112 27744 28288 28416 29952 30056 30192 30784 31824 32079 32708 33813 34632 36992 39168 40256 41616 42432 42624 42772 45084 45288 46176 49062 55488 56576 56832 59904 60112 60384 61568 63648 64158 65416 67626 69264 73593 73984 78336 80512 83232 84864 85248 85544 90168 90576 92352 96237 98124 110976 113152 120224 120768 123136 127296 128316 130832 135252 138528 139009 147186 147968 161024 166464 169728 170496 171088 180336 181152 184704 192474 196248 221952 240448 241536 246272 254592 256632 261664 270504 277056 278018 294372 322048 332928 339456 342176 360672 362304 369408 384948 392496 417027 443904 480896 483072 509184 513264 523328 541008 554112 556036 588744 665856 684352 721344 724608 738816 769896 784992 834054 961792 966144 1018368 1026528 1046656 1082016 1108224 1112072 1177488 1251081 1331712 1368704 1442688 1449216 1539792 1569984 1668108 1923584 2053056 2093312 2164032 2216448 2224144 2354976 2502162 2737408 2885376 2898432 3079584 3139968 3336216 4106112 4186624 4328064 4448288 4709952 5004324 5474816 5770752 6159168 6279936 6672432 8212224 8656128 8896576 9419904 10008648 12318336 12559872 13344864 16424448 17312256 17793152 18839808 20017296 24636672 26689728 35586304 37679616 40034592 49273344 53379456 71172608 80069184 106758912 160138368 213517824 320276736 640553472
• Sum of all divisors σ(n): 2172045876
• Sum of proper divisors (its aliquot sum) s(n): 1531492404
• 640553472 is an abundant number, because the sum of its proper divisors (1531492404) is greater than itself. Its abundance is 890938932

Bases of 640553472

• Binary: 100110001011100001001000000000₂
• Hexadecimal: 0x262E1200
• Base-36: ALDA80

Squares and roots of 640553472

• 640553472 squared (640553472²) is 410308750491254784
• 640553472 cubed (640553472³) is 262824694719154957527810048
• The square root of 640553472 is 25309.1578682499
• The cube root of 640553472 is 862.0222251183

Scales and comparisons

• 640,553,472 seconds is equal to 20 years, 19 weeks, 19 hours, 31 minutes, 12 seconds.
• To count from 1 to 640,553,472 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 640553472 cubic inches would be around 71.8 feet tall.

Recreational maths with 640553472

• 640553472 backwards is 274355046
• 640553472 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 640553472's digits is 36
• More coming soon!