21358587712

Names of 21358587712

• Cardinal: 21358587712 can be written as Twenty-one billion, three hundred fifty-eight million, five hundred eighty-seven thousand, seven hundred twelve.

Scientific notation

• Scientific notation: 2.1358587712 × 10¹⁰

Factors of 21358587712

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 34274

Divisors of 21358587712

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 28 32 44 56 64 77 88 112 127 154 176 224 254 308 352 448 508 616 704 889 1016 1232 1397 1778 2032 2464 2794 3556 4064 4928 5588 7112 8128 9779 11176 14224 19558 22352 28448 34127 39116 44704 56896 68254 78232 89408 136508 156464 238889 273016 312928 375397 477778 546032 625856 750794 955556 1092064 1501588 1911112 2184128 2627779 3003176 3822224 4334129 5255558 6006352 7644448 8668258 10511116 12012704 15288896 17336516 21022232 24025408 30338903 34673032 42044464 47675419 60677806 69346064 84088928 95350838 121355612 138692128 168177856 190701676 242711224 277384256 333727933 381403352 485422448 667455866 762806704 970844896 1334911732 1525613408 1941689792 2669823464 3051226816 5339646928 10679293856 21358587712
• Sum of all divisors σ(n): 53259337728
• Sum of proper divisors (its aliquot sum) s(n): 31900750016
• 21358587712 is an abundant number, because the sum of its proper divisors (31900750016) is greater than itself. Its abundance is 10542162304

Bases of 21358587712

• Binary: 10011111001000100100010111101000000₂
• Hexadecimal: 0x4F9122F40
• Base-36: 9T8CNR4

Squares and roots of 21358587712

• 21358587712 squared (21358587712²) is 456189269051197394944
• 21358587712 cubed (21358587712³) is 9743558516303166578537329328128
• The square root of 21358587712 is 146145.7755530415
• The cube root of 21358587712 is 2774.5390663473

Scales and comparisons

• 21,358,587,712 seconds is equal to 679 years, 7 weeks, 21 hours, 1 minute, 52 seconds.
• To count from 1 to 21,358,587,712 would take you about one thousand, three hundred fifty-eight 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 21358587712 cubic inches would be around 231.2 feet tall.

Recreational maths with 21358587712

• 21358587712 backwards is 21778585312
• The number of decimal digits it has is: 11
• The sum of 21358587712's digits is 49
• More coming soon!