71398138890

Names of 71398138890

• Cardinal: 71398138890 can be written as Seventy-one billion, three hundred ninety-eight million, one hundred thirty-eight thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 7.139813889 × 10¹⁰

Factors of 71398138890

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 557

Divisors of 71398138890

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 5 6 10 13 15 26 30 39 65 71 78 79 127 130 142 158 195 213 237 254 257 355 381 390 395 426 474 514 635 710 762 771 790 923 1027 1065 1185 1270 1285 1542 1651 1846 1905 2054 2130 2370 2570 2769 3081 3302 3341 3810 3855 4615 4953 5135 5538 5609 6162 6682 7710 8255 9017 9230 9906 10023 10033 10270 11218 13845 15405 16510 16705 16827 18034 18247 20046 20066 20303 24765 27051 27690 28045 30099 30810 32639 33410 33654 36494 40606 45085 49530 50115 50165 54102 54741 56090 60198 60909 65278 72917 84135 90170 91235 97917 100230 100330 101515 109482 117221 121818 130429 135255 145834 150495 163195 168270 182470 195834 203030 218751 234442 237211 260858 263939 270510 273705 300990 304545 326390 351663 364585 391287 424307 437502 474422 489585 527878 547410 586105 609090 652145 703326 711633 712343 729170 782574 791817 848614 979170 1093755 1172210 1186055 1272921 1304290 1319695 1423266 1424686 1441513 1583634 1758315 1956435 2121535 2137029 2187510 2317369 2372110 2545842 2578481 2639390 2883026 3516630 3558165 3561715 3912870 3959085 4243070 4274058 4324539 4634738 5156962 6364605 6952107 7116330 7123430 7207565 7735443 7918170 8649078 9260459 10685145 11586845 12729210 12892405 13904214 14415130 15470886 18520918 18739669 21370290 21622695 23173690 25784810 27781377 30125797 33520253 34760535 37479338 38677215 43245390 46302295 55562754 56219007 60251594 67040506 69521070 77354430 90377391 92604590 93698345 100560759 112438014 138906885 150628985 167601265 180754782 183072151 187396690 201121518 277813770 281095035 301257970 335202530 366144302 451886955 502803795 549216453 562190070 903773910 915360755 1005607590 1098432906 1830721510 2379937963 2746082265 4759875926 5492164530 7139813889 11899689815 14279627778 23799379630 35699069445 71398138890
• Sum of all divisors σ(n): 191739985920
• Sum of proper divisors (its aliquot sum) s(n): 120341847030
• 71398138890 is an abundant number, because the sum of its proper divisors (120341847030) is greater than itself. Its abundance is 48943708140

Bases of 71398138890

• Binary: 1000010011111101010010010010000001010₂
• Hexadecimal: 0x109FA9240A
• Base-36: WSSLWJU

Squares and roots of 71398138890

• 71398138890 squared (71398138890²) is 5097694236955730432100
• 71398138890 cubed (71398138890³) is 363965881148917812172475514369000
• The square root of 71398138890 is 267204.3017804915
• The cube root of 71398138890 is 4148.5433294735

Scales and comparisons

• 71,398,138,890 seconds is equal to 2,270 years, 12 weeks, 3 days, 8 hours, 21 minutes, 30 seconds.
• To count from 1 to 71,398,138,890 would take you about four thousand, five hundred forty 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 71398138890 cubic inches would be around 345.7 feet tall.

Recreational maths with 71398138890

• 71398138890 backwards is 09883189317
• The number of decimal digits it has is: 11
• The sum of 71398138890's digits is 57
• More coming soon!