19907021290

Names of 19907021290

• Cardinal: 19907021290 can be written as Nineteen billion, nine hundred seven million, twenty-one thousand, two hundred ninety.

Scientific notation

• Scientific notation: 1.990702129 × 10¹⁰

Factors of 19907021290

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 808

Divisors of 19907021290

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 10 13 26 29 58 65 83 113 130 145 166 226 290 377 415 563 565 754 830 1079 1126 1130 1469 1885 2158 2407 2815 2938 3277 3770 4814 5395 5630 6554 7319 7345 9379 10790 12035 14638 14690 16327 16385 18758 24070 31291 32654 32770 36595 42601 46729 46895 62582 63619 73190 81635 85202 93458 93790 121927 127238 156455 163270 212251 213005 233645 243854 271991 312910 318095 424502 426010 467290 543982 607477 609635 636190 827047 1061255 1214954 1219270 1355141 1359955 1654094 1844951 2122510 2710282 2719910 3037385 3535883 3689902 4135235 5280377 6074770 6775705 7071766 8270470 9224755 10560754 13551410 17616833 17679415 18449510 23984363 26401885 35233666 35358830 47968726 52803770 68644901 88084165 119921815 137289802 153130933 176168330 239843630 306261866 343224505 686449010 765654665 1531309330 1990702129 3981404258 9953510645 19907021290
• Sum of all divisors σ(n): 40830531840
• Sum of proper divisors (its aliquot sum) s(n): 20923510550
• 19907021290 is an abundant number, because the sum of its proper divisors (20923510550) is greater than itself. Its abundance is 1016489260

Bases of 19907021290

• Binary: 10010100010100011010000100111101010₂
• Hexadecimal: 0x4A28D09EA
• Base-36: 9584JXM

Squares and roots of 19907021290

• 19907021290 squared (19907021290²) is 396289496640513264100
• 19907021290 cubed (19907021290³) is 7888943446626081024966092689000
• The square root of 19907021290 is 141092.2439044753
• The cube root of 19907021290 is 2710.2046971645

Scales and comparisons

• 19,907,021,290 seconds is equal to 632 years, 51 weeks, 8 hours, 8 minutes, 10 seconds.
• To count from 1 to 19,907,021,290 would take you about one thousand, two hundred sixty-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 19907021290 cubic inches would be around 225.9 feet tall.

Recreational maths with 19907021290

• 19907021290 backwards is 09212070991
• The number of decimal digits it has is: 11
• The sum of 19907021290's digits is 40
• More coming soon!