640412136

Names of 640412136

• Cardinal: 640412136 can be written as Six hundred forty million, four hundred twelve thousand, one hundred thirty-six.

Scientific notation

• Scientific notation: 6.40412136 × 10⁸

Factors of 640412136

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1107

Divisors of 640412136

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 18 21 24 26 27 28 31 36 39 42 52 54 56 62 63 72 78 84 91 93 104 108 117 124 126 156 168 182 186 189 216 217 234 248 252 273 279 312 351 364 372 378 403 434 468 504 546 558 651 702 728 744 756 806 819 837 868 936 1051 1092 1116 1209 1302 1404 1512 1612 1638 1674 1736 1953 2102 2184 2232 2418 2457 2604 2808 2821 3153 3224 3276 3348 3627 3906 4204 4836 4914 5208 5642 5859 6306 6552 6696 7254 7357 7812 8408 8463 9459 9672 9828 10881 11284 11718 12612 13663 14508 14714 15624 16926 18918 19656 21762 22071 22568 23436 25224 25389 27326 28377 29016 29428 32581 33852 37836 40989 43524 44142 46872 50778 54652 56754 58856 65162 66213 67704 75672 76167 81978 87048 88284 95641 97743 101556 109304 113508 122967 130324 132426 152334 163956 176568 191282 195486 198639 203112 227016 228067 245934 260648 264852 286923 293229 304668 327912 368901 382564 390972 397278 423553 456134 491868 529704 573846 586458 609336 684201 737802 765128 781944 794556 847106 860769 879687 912268 983736 1147692 1172916 1270659 1368402 1475604 1589112 1694212 1721538 1759374 1824536 2052603 2295384 2345832 2541318 2582307 2736804 2951208 2964871 3388424 3443076 3518748 3811977 4105206 5082636 5164614 5473608 5929742 6157809 6886152 7037496 7623954 8210412 8894613 10165272 10329228 11435931 11859484 12315618 15247908 16420824 17789226 20658456 22871862 23718968 24631236 26683839 30495816 35578452 45743724 49262472 53367678 71156904 80051517 91487448 106735356 160103034 213470712 320206068 640412136
• Sum of all divisors σ(n): 2262220800
• Sum of proper divisors (its aliquot sum) s(n): 1621808664
• 640412136 is an abundant number, because the sum of its proper divisors (1621808664) is greater than itself. Its abundance is 981396528

Bases of 640412136

• Binary: 100110001010111110100111101000₂
• Hexadecimal: 0x262BE9E8
• Base-36: ALA960

Squares and roots of 640412136

• 640412136 squared (640412136²) is 410127703936082496
• 640412136 cubed (640412136³) is 262650758910482198735571456
• The square root of 640412136 is 25306.3655233223
• The cube root of 640412136 is 861.9588196727

Scales and comparisons

• 640,412,136 seconds is equal to 20 years, 18 weeks, 6 days, 4 hours, 15 minutes, 36 seconds.
• To count from 1 to 640,412,136 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 640412136 cubic inches would be around 71.8 feet tall.

Recreational maths with 640412136

• 640412136 backwards is 631214046
• 640412136 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 640412136's digits is 27
• More coming soon!