21008704856408

Names of 21008704856408

• Cardinal: 21008704856408 can be written as Twenty-one trillion, eight billion, seven hundred four million, eight hundred fifty-six thousand, four hundred eight.

Scientific notation

• Scientific notation: 2.1008704856408 × 10¹³

Factors of 21008704856408

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1189

Divisors of 21008704856408

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 8 17 19 34 38 68 76 136 152 289 323 361 578 646 722 1151 1156 1292 1444 2302 2312 2584 2888 4604 5491 6137 6859 9208 10982 12274 13718 19567 21869 21964 24548 27436 39134 43738 43928 49096 54872 78268 87476 104329 116603 156536 174952 208658 233206 332639 371773 415511 417316 466412 665278 743546 831022 834632 932824 1324801 1330556 1487092 1662044 1982251 2649602 2661112 2974184 3324088 3964502 5299204 6320141 7063687 7894709 7929004 10598408 12640282 14127374 15789418 15858008 22521617 25171219 25280564 28254748 31578836 45043234 50342438 50561128 56509496 63157672 90086468 100684876 120082679 134210053 180172936 201369752 240165358 268420106 382867489 427910723 478253161 480330716 536840212 765734978 855821446 956506322 960661432 1073680424 1531469956 1711642892 1913012644 2281570901 3062939912 3423285784 3826025288 4563141802 7274482291 8130303737 9086810059 9126283604 14548964582 16260607474 18173620118 18252567208 29097929164 32521214948 36347240236 58195858328 65042429896 72694480472 138215163529 154475771003 276430327058 308951542006 552860654116 617903084012 1105721308232 1235806168024 2626088107051 5252176214102 10504352428204 21008704856408
• Sum of all divisors σ(n): 44207538210600
• Sum of proper divisors (its aliquot sum) s(n): 23198833354192
• 21008704856408 is an abundant number, because the sum of its proper divisors (23198833354192) is greater than itself. Its abundance is 2190128497784

Bases of 21008704856408

• Binary: 100110001101101111000011000111110000101011000₂
• Hexadecimal: 0x131B7863E158
• Base-36: 7G39KFXW8

Squares and roots of 21008704856408

• 21008704856408 squared (21008704856408²) is 441365679743661083898662464
• 21008704856408 cubed (21008704856408³) is 9272521299482470645855467241572379469312
• The square root of 21008704856408 is 4583525.3742515705
• The cube root of 21008704856408 is 27593.0533068601

Scales and comparisons

• 21,008,704,856,408 seconds is equal to 668,011 years, 43 weeks, 1 day, 5 hours, 8 seconds.
• To count from 1 to 21,008,704,856,408 would take you about one million, six hundred seventy thousand and twenty-nine 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 21008704856408 cubic inches would be around 2299.4 feet tall.

Recreational maths with 21008704856408

• 21008704856408 backwards is 80465840780012
• The number of decimal digits it has is: 14
• The sum of 21008704856408's digits is 53
• More coming soon!