21252860720

Names of 21252860720

• Cardinal: 21252860720 can be written as Twenty-one billion, two hundred fifty-two million, eight hundred sixty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.125286072 × 10¹⁰

Factors of 21252860720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 335

Divisors of 21252860720

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 35 40 52 56 65 70 80 91 104 112 127 130 140 181 182 208 254 260 280 362 364 455 508 520 560 635 724 728 889 905 910 1016 1040 1267 1270 1448 1456 1651 1778 1810 1820 2032 2353 2534 2540 2896 3302 3556 3620 3640 4445 4706 5068 5080 6335 6604 7112 7240 7280 8255 8890 9412 10136 10160 11557 11765 12670 13208 14224 14480 16129 16471 16510 17780 18824 20272 22987 23114 23530 25340 26416 32258 32942 33020 35560 37648 45974 46228 47060 50680 57785 64516 65884 66040 71120 80645 82355 91948 92456 94120 101360 112903 114935 115570 129032 131768 132080 160909 161290 164710 183896 184912 188240 209677 225806 229870 231140 258064 263536 298831 321818 322580 329420 367792 419354 451612 459740 462280 564515 597662 643636 645160 658840 804545 838708 903224 919480 924560 1048385 1129030 1195324 1287272 1290320 1317680 1467739 1494155 1609090 1677416 1806448 1838960 2091817 2096770 2258060 2390648 2574544 2919349 2935478 2988310 3218180 3354832 4183634 4193540 4516120 4781296 5838698 5870956 5976620 6436360 7338695 8367268 8387080 9032240 10459085 11677396 11741912 11953240 12872720 14596745 14677390 16734536 16774160 20435443 20918170 23354792 23483824 23906480 29193490 29354780 33469072 37951537 40870886 41836340 46709584 58386980 58709560 75903074 81741772 83672680 102177215 116773960 117419120 151806148 163483544 167345360 189757685 204354430 233547920 265660759 303612296 326967088 379515370 408708860 531321518 607224592 759030740 817417720 1062643036 1328303795 1518061480 1634835440 2125286072 2656607590 3036122960 4250572144 5313215180 10626430360 21252860720
• Sum of all divisors σ(n): 61637179968
• Sum of proper divisors (its aliquot sum) s(n): 40384319248
• 21252860720 is an abundant number, because the sum of its proper divisors (40384319248) is greater than itself. Its abundance is 19131458528

Bases of 21252860720

• Binary: 10011110010110001001110101100110000₂
• Hexadecimal: 0x4F2C4EB30
• Base-36: 9RHEKA8

Squares and roots of 21252860720

• 21252860720 squared (21252860720²) is 451684088783718918400
• 21252860720 cubed (21252860720³) is 9599579028360492376384245248000
• The square root of 21252860720 is 145783.6092295703
• The cube root of 21252860720 is 2769.9534162213

Scales and comparisons

• 21,252,860,720 seconds is equal to 675 years, 40 weeks, 2 days, 4 hours, 25 minutes, 20 seconds.
• To count from 1 to 21,252,860,720 would take you about one thousand, three hundred fifty-one 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 21252860720 cubic inches would be around 230.8 feet tall.

Recreational maths with 21252860720

• 21252860720 backwards is 02706825212
• 21252860720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21252860720's digits is 35
• More coming soon!