1989897280

Names of 1989897280

• Cardinal: 1989897280 can be written as One billion, nine hundred eighty-nine million, eight hundred ninety-seven thousand, two hundred eighty.

Scientific notation

• Scientific notation: 1.98989728 × 10⁹

Factors of 1989897280

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 563

Divisors of 1989897280

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 41 47 56 64 70 80 82 94 112 140 160 164 188 205 224 235 280 287 320 328 329 376 410 448 461 470 560 574 656 658 752 820 922 940 1120 1148 1312 1316 1435 1504 1640 1645 1844 1880 1927 2240 2296 2305 2624 2632 2870 3008 3227 3280 3290 3688 3760 3854 4592 4610 5264 5740 6454 6560 6580 7376 7520 7708 9184 9220 9635 10528 11480 12908 13120 13160 13489 14752 15040 15416 16135 18368 18440 18901 19270 21056 21667 22960 25816 26320 26978 29504 30832 32270 36880 37802 38540 43334 45920 51632 52640 53956 61664 64540 67445 73760 75604 77080 86668 91840 94505 103264 105280 107912 108335 123328 129080 132307 134890 147520 151208 151669 154160 173336 189010 206528 215824 216670 258160 264614 269780 302416 303338 308320 346672 378020 431648 433340 516320 529228 539560 604832 606676 616640 661535 693344 756040 758345 863296 866680 888347 1032640 1058456 1079120 1209664 1213352 1323070 1386688 1512080 1516690 1733360 1776694 2116912 2158240 2426704 2646140 3024160 3033380 3466720 3553388 4233824 4316480 4441735 4853408 5292280 6048320 6066760 6218429 6933440 7106776 8467648 8883470 9706816 10584560 12133520 12436858 14213552 17766940 21169120 24267040 24873716 28427104 31092145 35533880 42338240 48534080 49747432 56854208 62184290 71067760 99494864 124368580 142135520 198989728 248737160 284271040 397979456 497474320 994948640 1989897280
• Sum of all divisors σ(n): 5677765632
• Sum of proper divisors (its aliquot sum) s(n): 3687868352
• 1989897280 is an abundant number, because the sum of its proper divisors (3687868352) is greater than itself. Its abundance is 1697971072

Bases of 1989897280

• Binary: 1110110100110110110110001000000₂
• Hexadecimal: 0x769B6C40
• Base-36: WWQEKG

Squares and roots of 1989897280

• 1989897280 squared (1989897280²) is 3959691184951398400
• 1989897280 cubed (1989897280³) is 7879378718574764608356352000
• The square root of 1989897280 is 44608.2647050969
• The cube root of 1989897280 is 1257.7960295223

Scales and comparisons

• 1,989,897,280 seconds is equal to 63 years, 14 weeks, 1 day, 5 hours, 14 minutes, 40 seconds.
• To count from 1 to 1,989,897,280 would take you about one hundred twenty-six 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 1989897280 cubic inches would be around 104.8 feet tall.

Recreational maths with 1989897280

• 1989897280 backwards is 0827989891
• The number of decimal digits it has is: 10
• The sum of 1989897280's digits is 61
• More coming soon!