642885832420

Names of 642885832420

• Cardinal: 642885832420 can be written as Six hundred forty-two billion, eight hundred eighty-five million, eight hundred thirty-two thousand, four hundred twenty.

Scientific notation

• Scientific notation: 6.4288583242 × 10¹¹

Factors of 642885832420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 246

Divisors of 642885832420

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 4 5 10 13 20 26 29 52 58 65 116 130 145 169 197 260 290 338 377 394 580 676 754 788 845 985 1508 1690 1885 1970 2197 2561 3380 3770 3940 4394 4901 5122 5713 7540 8788 9802 10244 10985 11426 12805 19604 21970 22852 24505 25610 28561 28565 33293 38809 43940 49010 51220 57122 57130 63713 66586 74269 77618 98020 114244 114260 127426 133172 142805 148538 155236 166465 194045 254852 285610 297076 318565 332930 371345 388090 432809 504517 571220 637130 665860 742690 776180 828269 865618 965497 1009034 1125461 1274260 1485380 1656538 1731236 1930994 2018068 2164045 2250922 2522585 3313076 3861988 4141345 4328090 4501844 4827485 5045170 5626517 5627305 6558721 8282690 8656180 9654970 10090340 11253034 11254610 12551461 13117442 14630993 16565380 19309940 22506068 22509220 25102922 26234884 28132585 29261986 32793605 50205844 56265170 58523972 62757305 65587210 73154965 85263373 112530340 125514610 131174420 146309930 163168993 170526746 190202909 251029220 292619860 326337986 341053492 380405818 426316865 652675972 760811636 815844965 852633730 951014545 1108423849 1631689930 1705267460 1902029090 2216847698 2472637817 3263379860 3804058180 4433695396 4945275634 5542119245 9890551268 11084238490 12363189085 22168476980 24726378170 32144291621 49452756340 64288583242 128577166484 160721458105 321442916210 642885832420
• Sum of all divisors σ(n): 1520713639620
• Sum of proper divisors (its aliquot sum) s(n): 877827807200
• 642885832420 is an abundant number, because the sum of its proper divisors (877827807200) is greater than itself. Its abundance is 234941974780

Bases of 642885832420

• Binary: 1001010110101110111110110100111011100100₂
• Hexadecimal: 0x95AEFB4EE4
• Base-36: 87C5MJ1G

Squares and roots of 642885832420

• 642885832420 squared (642885832420²) is 413302193526356323056400
• 642885832420 cubed (642885832420³) is 265706124726203519957644152608488000
• The square root of 642885832420 is 801801.6166234637
• The cube root of 642885832420 is 8630.6721266315

Scales and comparisons

• 642,885,832,420 seconds is equal to 20,441 years, 40 weeks, 4 days, 5 hours, 53 minutes, 40 seconds.
• To count from 1 to 642,885,832,420 would take you about forty thousand, eight hundred eighty-three 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 642885832420 cubic inches would be around 719.2 feet tall.

Recreational maths with 642885832420

• 642885832420 backwards is 024238588246
• 642885832420 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 642885832420's digits is 52
• More coming soon!