21402888390

Names of 21402888390

• Cardinal: 21402888390 can be written as Twenty-one billion, four hundred two million, eight hundred eighty-eight thousand, three hundred ninety.

Scientific notation

• Scientific notation: 2.140288839 × 10¹⁰

Factors of 21402888390

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 253

Divisors of 21402888390

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 19 26 27 30 38 39 45 54 57 65 78 81 90 95 114 117 130 135 162 169 171 190 195 211 234 243 247 270 285 338 342 351 390 405 422 486 494 507 513 570 585 633 702 741 810 845 855 1014 1026 1053 1055 1170 1215 1235 1266 1482 1521 1539 1690 1710 1755 1899 2106 2110 2197 2223 2430 2470 2535 2565 2743 3042 3078 3159 3165 3211 3510 3705 3798 4009 4394 4446 4563 4617 5070 5130 5265 5486 5697 6318 6330 6422 6591 6669 7410 7605 7695 8018 8229 9126 9234 9495 9633 10530 10985 11115 11394 12027 13182 13338 13689 13715 15210 15390 15795 16055 16458 17091 18990 19266 19773 20007 20045 21970 22230 22815 23085 24054 24687 27378 27430 28485 28899 31590 32110 32955 33345 34182 35659 36081 39546 40014 40090 41067 41145 41743 45630 46170 48165 49374 51273 52117 56970 57798 59319 60021 60135 65910 66690 68445 71318 72162 74061 82134 82290 83486 85455 86697 96330 98865 100035 102546 104234 106977 108243 118638 120042 120270 123435 125229 136890 144495 148122 156351 170910 173394 177957 178295 180405 197730 200070 205335 208715 213954 216486 222183 246870 250458 256365 260091 260585 288990 296595 300105 312702 320931 324729 355914 356590 360810 370305 375687 410670 417430 433485 444366 463567 469053 512730 520182 521170 533871 534885 541215 593190 600210 626145 641862 649458 666549 677521 740610 751374 780273 781755 866970 889785 927134 938106 962793 974187 1067742 1069770 1082430 1110915 1127061 1252290 1300455 1333098 1355042 1390701 1407159 1560546 1563510 1604655 1623645 1779570 1878435 1925586 1948374 2032563 2221830 2254122 2317835 2345265 2600910 2669355 2781402 2814318 2888379 3209310 3247290 3332745 3381183 3387605 3756870 3901365 4065126 4172103 4221477 4635670 4690530 4813965 4870935 5338710 5635305 5776758 6097689 6665490 6762366 6775210 6953505 7035795 7802730 8344206 8442954 8665137 8807773 9627930 9741870 10143549 10162815 11270610 12195378 12516309 12664431 13907010 14071590 14441895 16905915 17330274 17615546 18293067 20287098 20325630 20860515 21107385 25032618 25328862 26423319 28883790 30488445 33811830 36586134 37548927 41721030 42214770 43325685 44038865 50717745 52846638 54879201 60976890 62581545 63322155 75097854 79269957 86651370 88077730 91465335 101435490 109758402 112646781 125163090 126644310 132116595 158539914 164637603 182930670 187744635 225293562 237809871 264233190 274396005 329275206 375489270 396349785 475619742 548792010 563233905 713429613 792699570 823188015 1126467810 1189049355 1426859226 1646376030 2140288839 2378098710 3567148065 4280577678 7134296130 10701444195 21402888390
• Sum of all divisors σ(n): 66117542400
• Sum of proper divisors (its aliquot sum) s(n): 44714654010
• 21402888390 is an abundant number, because the sum of its proper divisors (44714654010) is greater than itself. Its abundance is 23311765620

Bases of 21402888390

• Binary: 10011111011101101100010100011000110₂
• Hexadecimal: 0x4FBB628C6
• Base-36: 9TYQ6DI

Squares and roots of 21402888390

• 21402888390 squared (21402888390²) is 458083631434796792100
• 21402888390 cubed (21402888390³) is 9804312836884851303646333719000
• The square root of 21402888390 is 146297.2603639589
• The cube root of 21402888390 is 2776.4560014463

Scales and comparisons

• 21,402,888,390 seconds is equal to 680 years, 28 weeks, 2 days, 14 hours, 46 minutes, 30 seconds.
• To count from 1 to 21,402,888,390 would take you about one thousand, three hundred sixty-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 21402888390 cubic inches would be around 231.4 feet tall.

Recreational maths with 21402888390

• 21402888390 backwards is 09388820412
• 21402888390 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21402888390's digits is 45
• More coming soon!