20521396740

Names of 20521396740

• Cardinal: 20521396740 can be written as Twenty billion, five hundred twenty-one million, three hundred ninety-six thousand, seven hundred forty.

Scientific notation

• Scientific notation: 2.052139674 × 10¹⁰

Factors of 20521396740

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 14028

Divisors of 20521396740

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 10 12 13 15 20 26 30 31 39 52 60 61 62 65 78 93 122 124 130 155 156 183 186 195 244 260 305 310 366 372 390 403 465 610 620 732 780 793 806 915 930 1209 1220 1586 1612 1830 1860 1891 2015 2379 2418 3172 3660 3782 3965 4030 4758 4836 5673 6045 7564 7930 8060 9455 9516 11346 11895 12090 13913 15860 18910 22692 23790 24180 24583 27826 28365 37820 41739 47580 49166 55652 56730 69565 73749 83478 98332 113460 122915 139130 147498 166956 180869 208695 245830 278260 294996 361738 368745 417390 431303 491660 542607 723476 737490 834780 848693 862606 904345 1085214 1293909 1474980 1697386 1725212 1808690 2156515 2170428 2546079 2587818 2713035 3394772 3617380 4243465 4313030 5092158 5175636 5426070 5606939 6469545 8486930 8626060 10184316 10852140 11033009 11213878 12730395 12939090 16820817 16973860 22066018 22427756 25460790 25878180 26309483 28034695 33099027 33641634 44132036 50921580 52618966 55165045 56069390 66198054 67283268 78928449 84104085 105237932 110330090 112138780 131547415 132396108 157856898 165495135 168208170 220660180 263094830 315713796 330990270 336416340 342023279 394642245 526189660 661980540 684046558 789284490 1026069837 1368093116 1578568980 1710116395 2052139674 3420232790 4104279348 5130349185 6840465580 10260698370 20521396740
• Sum of all divisors σ(n): 64927844352
• Sum of proper divisors (its aliquot sum) s(n): 44406447612
• 20521396740 is an abundant number, because the sum of its proper divisors (44406447612) is greater than itself. Its abundance is 23885050872

Bases of 20521396740

• Binary: 10011000111001010111010101000000100₂
• Hexadecimal: 0x4C72BAA04
• Base-36: 9FDWR2C

Squares and roots of 20521396740

• 20521396740 squared (20521396740²) is 421127724160482627600
• 20521396740 cubed (20521396740³) is 8642129105710547430857274024000
• The square root of 20521396740 is 143252.9118028669
• The cube root of 20521396740 is 2737.8036966711

Scales and comparisons

• 20,521,396,740 seconds is equal to 652 years, 26 weeks, 6 days, 3 hours, 59 minutes.
• To count from 1 to 20,521,396,740 would take you about one thousand, three hundred five 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 20521396740 cubic inches would be around 228.2 feet tall.

Recreational maths with 20521396740

• 20521396740 backwards is 04769312502
• 20521396740 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20521396740's digits is 39
• More coming soon!