28072901220

Names of 28072901220

• Cardinal: 28072901220 can be written as Twenty-eight billion, seventy-two million, nine hundred one thousand, two hundred twenty.

Scientific notation

• Scientific notation: 2.807290122 × 10¹⁰

Factors of 28072901220

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1905

Divisors of 28072901220

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 13 14 15 20 21 26 28 30 35 37 39 42 52 60 65 70 74 78 79 84 91 105 111 130 140 148 156 158 182 185 195 210 222 237 259 260 273 316 364 370 390 395 420 444 455 474 481 518 546 553 555 740 777 780 790 910 948 962 1027 1036 1092 1106 1110 1185 1295 1365 1443 1554 1580 1659 1759 1820 1924 2054 2212 2220 2370 2405 2590 2730 2765 2886 2923 3081 3108 3318 3367 3518 3885 4108 4740 4810 5135 5180 5277 5460 5530 5772 5846 6162 6636 6734 7036 7189 7215 7770 8295 8769 8795 9620 10101 10270 10554 11060 11692 12313 12324 13468 14378 14430 14615 15405 15540 16590 16835 17538 17590 20202 20461 20540 21108 21567 22867 24626 26385 28756 28860 29230 30810 33180 33670 35076 35180 35945 36939 37999 40404 40922 43134 43845 45734 49252 50505 52770 58460 61383 61565 61620 65083 67340 68601 71890 73878 75998 81844 86268 87690 91468 101010 102305 105540 107835 113997 114335 122766 123130 130166 137202 138961 143780 147756 151996 160069 175380 184695 189995 195249 202020 204610 215670 227994 228670 245532 246260 260332 265993 274404 277922 306915 320138 325415 343005 369390 379990 390498 409220 416883 431340 455581 455988 457340 480207 531986 555844 569985 613830 640276 650830 686010 694805 738780 759980 780996 797979 800345 833766 846079 911162 960414 972727 976245 1063972 1139970 1227660 1301660 1329965 1366743 1372020 1389610 1595958 1600690 1667532 1692158 1806493 1822324 1920828 1945454 1952490 2084415 2277905 2279940 2401035 2538237 2659930 2733486 2779220 2918181 3191916 3201380 3384316 3612986 3890908 3904980 3989895 4168830 4230395 4555810 4802070 4863635 5076474 5141557 5319860 5419479 5466972 5836362 5922553 6833715 7225972 7979790 8337660 8460790 9032465 9111620 9604140 9727270 10152948 10283114 10838958 11672724 11845106 12645451 12691185 13667430 14590905 15424671 15959580 16921580 17767659 18064930 19454540 20566228 21677916 23690212 25290902 25382370 25707785 27097395 27334860 29181810 29612765 30849342 35535318 35990899 36129860 37936353 50581804 50764740 51415570 54194790 58363620 59225530 61698684 63227255 66840241 71070636 71981798 75872706 77123355 88838295 102831140 107972697 108389580 118451060 126454510 133680482 143963596 151745412 154246710 177676590 179954495 189681765 200520723 215945394 252909020 267360964 308493420 334201205 355353180 359908990 379363530 401041446 431890788 467881687 539863485 668402410 719817980 758727060 802082892 935763374 1002603615 1079726970 1336804820 1403645061 1871526748 2005207230 2159453940 2339408435 2807290122 4010414460 4678816870 5614580244 7018225305 9357633740 14036450610 28072901220
• Sum of all divisors σ(n): 100673126400
• Sum of proper divisors (its aliquot sum) s(n): 72600225180
• 28072901220 is an abundant number, because the sum of its proper divisors (72600225180) is greater than itself. Its abundance is 44527323960

Bases of 28072901220

• Binary: 11010001001010001100111101001100100₂
• Hexadecimal: 0x689467A64
• Base-36: CW9VP7O

Squares and roots of 28072901220

• 28072901220 squared (28072901220²) is 788087782907877488400
• 28072901220 cubed (28072901220³) is 22123910482261649091714895848000
• The square root of 28072901220 is 167549.6977615895
• The cube root of 28072901220 is 3039.2220575477

Scales and comparisons

• 28,072,901,220 seconds is equal to 892 years, 32 weeks, 5 days, 20 hours, 7 minutes.
• To count from 1 to 28,072,901,220 would take you about one thousand, seven hundred eighty-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 28072901220 cubic inches would be around 253.3 feet tall.

Recreational maths with 28072901220

• 28072901220 backwards is 02210927082
• The number of decimal digits it has is: 11
• The sum of 28072901220's digits is 33
• More coming soon!