15121890972

Names of 15121890972

• Cardinal: 15121890972 can be written as Fifteen billion, one hundred twenty-one million, eight hundred ninety thousand, nine hundred seventy-two.

Scientific notation

• Scientific notation: 1.5121890972 × 10¹⁰

Factors of 15121890972

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 216

Divisors of 15121890972

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 37 54 61 74 81 108 111 113 122 148 162 183 222 226 243 244 324 333 339 366 444 452 486 549 666 678 732 972 999 1017 1098 1332 1356 1647 1998 2034 2196 2257 2997 3051 3294 3721 3996 4068 4181 4514 4941 5994 6102 6588 6771 6893 7442 8362 8991 9028 9153 9882 11163 11988 12204 12543 13542 13786 14823 14884 16724 17982 18306 19764 20313 20679 22326 25086 27084 27459 27572 29646 33489 35964 36612 37629 40626 41358 44652 50172 54918 59292 60939 62037 66978 75258 81252 82716 100467 109836 112887 121878 124074 133956 137677 150516 182817 186111 200934 225774 243756 248148 255041 275354 301401 338661 365634 372222 401868 413031 420473 451548 510082 548451 550708 558333 602802 677322 731268 744444 765123 826062 840946 904203 1015983 1020164 1096902 1116666 1205604 1239093 1261419 1354644 1530246 1652124 1674999 1681892 1808406 2031966 2193804 2233332 2295369 2478186 2522838 3060492 3349998 3616812 3717279 3784257 4063932 4590738 4956372 5045676 6699996 6886107 7434558 7568514 9181476 11151837 11352771 13772214 14869116 15137028 15557501 20658321 22303674 22705542 27544428 31115002 33455511 34058313 41316642 44607348 45411084 46672503 61974963 62230004 66911022 68116626 82633284 93345006 102174939 123949926 133822044 136233252 140017509 186690012 204349878 247899852 280035018 408699756 420052527 560070036 840105054 1260157581 1680210108 2520315162 3780472743 5040630324 7560945486 15121890972
• Sum of all divisors σ(n): 41756511888
• Sum of proper divisors (its aliquot sum) s(n): 26634620916
• 15121890972 is an abundant number, because the sum of its proper divisors (26634620916) is greater than itself. Its abundance is 11512729944

Bases of 15121890972

• Binary: 1110000101010101011011111010011100₂
• Hexadecimal: 0x38555BE9C
• Base-36: 6Y36LR0

Squares and roots of 15121890972

• 15121890972 squared (15121890972²) is 228671586569055104784
• 15121890972 cubed (15121890972³) is 3457946800491510843603683610048
• The square root of 15121890972 is 122971.0981165899
• The cube root of 15121890972 is 2472.8742607087

Scales and comparisons

• 15,121,890,972 seconds is equal to 480 years, 43 weeks, 21 hours, 16 minutes, 12 seconds.
• To count from 1 to 15,121,890,972 would take you about nine 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 15121890972 cubic inches would be around 206.1 feet tall.

Recreational maths with 15121890972

• 15121890972 backwards is 27909812151
• The number of decimal digits it has is: 11
• The sum of 15121890972's digits is 45
• More coming soon!