640642118220

Names of 640642118220

• Cardinal: 640642118220 can be written as Six hundred forty billion, six hundred forty-two million, one hundred eighteen thousand, two hundred twenty.

Scientific notation

• Scientific notation: 6.4064211822 × 10¹¹

Factors of 640642118220

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 59334

Divisors of 640642118220

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 23 26 27 30 36 39 45 46 52 54 60 65 67 69 78 90 92 108 115 117 130 134 135 138 156 180 195 201 207 230 234 260 268 270 276 299 335 345 351 390 402 414 460 468 540 585 598 603 621 670 690 702 780 804 828 871 897 1005 1035 1170 1196 1206 1242 1340 1380 1404 1495 1541 1742 1755 1794 1809 2010 2070 2340 2412 2484 2613 2691 2990 3015 3082 3105 3484 3510 3588 3618 4020 4140 4355 4485 4623 5226 5382 5980 6030 6164 6210 7020 7236 7705 7839 8073 8710 8970 9045 9246 10452 10764 12060 12420 13065 13455 13869 15410 15678 16146 17420 17940 18090 18492 20033 23115 23517 26130 26910 27738 30820 31356 32292 36180 39195 40066 40365 41607 46230 47034 52260 53820 55476 59221 60099 69345 78390 80132 80730 83214 92460 94068 100165 117585 118442 120198 138690 156780 161460 166428 177663 180297 200330 208035 235170 236884 240396 277380 296105 300495 355326 360594 400660 416070 470340 532989 540891 592210 600990 710652 721188 769873 832140 888315 901485 1065978 1081782 1184420 1201980 1362083 1539746 1598967 1776630 1802970 2131956 2163564 2309619 2664945 2704455 2724166 3079492 3197934 3553260 3605940 3849365 3967807 4086249 4619238 5329890 5408910 5448332 6395868 6810415 6928857 7698730 7935614 7994835 8172498 9238476 10659780 10817820 11548095 11903421 12258747 13620830 13857714 15397460 15871228 15989670 16344996 17707079 19839035 20431245 20786571 23096190 23806842 24517494 27241660 27715428 31979340 34644285 35414158 35710263 36776241 39678070 40862490 41573142 46192380 47613684 49034988 51581491 53121237 59517105 61293735 69288570 70828316 71420526 73552482 79356140 81724980 83146284 88535395 91259561 103162982 103932855 106242474 107130789 119034210 122587470 138577140 142841052 147104964 154744473 159363711 177070790 178551315 182519122 183881205 206325964 207865710 212484948 214261578 238068420 245174940 257907455 265606185 273778683 309488946 318727422 354141580 357102630 365038244 367762410 415731420 428523156 456297805 464233419 478091133 515814910 531212370 535653945 547557366 618977892 637454844 714205260 735524820 773722365 796818555 821336049 912595610 928466838 956182266 1031629820 1062424740 1071307890 1095114732 1186374293 1368893415 1392700257 1547444730 1593637110 1642672098 1825191220 1856933676 1912364532 2142615780 2321167095 2372748586 2390455665 2464008147 2737786830 2785400514 3094889460 3187274220 3285344196 3559122879 4106680245 4642334190 4745497172 4780911330 4928016294 5475573660 5570801028 5931871465 6963501285 7118245758 8213360490 9284668380 9561822660 9856032588 10677368637 11863742930 12320040735 13927002570 14236491516 16426720980 17795614395 21354737274 23727485860 24640081470 27854005140 32032105911 35591228790 42709474548 49280162940 53386843185 64064211822 71182457580 106773686370 128128423644 160160529555 213547372740 320321059110 640642118220
• Sum of all divisors σ(n): 2273215150080
• Sum of proper divisors (its aliquot sum) s(n): 1632573031860
• 640642118220 is an abundant number, because the sum of its proper divisors (1632573031860) is greater than itself. Its abundance is 991930913640

Bases of 640642118220

• Binary: 1001010100101001001111101111001001001100₂
• Hexadecimal: 0x95293EF24C
• Base-36: 86B1RY30

Squares and roots of 640642118220

• 640642118220 squared (640642118220²) is 410422323637408455968400
• 640642118220 cubed (640642118220³) is 262933826779843728462935377384248000
• The square root of 640642118220 is 800401.2232749273
• The cube root of 640642118220 is 8620.6198838063

Scales and comparisons

• 640,642,118,220 seconds is equal to 20,370 years, 22 weeks, 5 days, 7 hours, 57 minutes.
• To count from 1 to 640,642,118,220 would take you about forty thousand, seven hundred forty 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 640642118220 cubic inches would be around 718.4 feet tall.

Recreational maths with 640642118220

• 640642118220 backwards is 022811246046
• 640642118220 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640642118220's digits is 36
• More coming soon!