12917187920

Names of 12917187920

• Cardinal: 12917187920 can be written as Twelve billion, nine hundred seventeen million, one hundred eighty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.291718792 × 10¹⁰

Factors of 12917187920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 766

Divisors of 12917187920

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 35 40 49 52 56 65 70 80 91 98 104 112 130 140 182 196 208 245 260 280 343 364 392 455 490 520 560 637 686 728 739 784 910 980 1040 1274 1372 1456 1478 1715 1820 1960 2401 2548 2744 2956 3185 3430 3640 3695 3920 4459 4802 5096 5173 5488 5912 6370 6860 7280 7390 8918 9604 9607 10192 10346 11824 12005 12740 13720 14780 16807 17836 19208 19214 20692 22295 24010 25480 25865 27440 29560 31213 33614 35672 36211 38416 38428 41384 44590 48020 48035 50960 51730 59120 62426 67228 67249 71344 72422 76856 82768 84035 89180 96040 96070 103460 124852 134456 134498 144844 153712 156065 168070 178360 181055 192080 192140 206920 218491 249704 253477 268912 268996 289688 312130 336140 336245 356720 362110 384280 413840 436982 470743 499408 506954 537992 579376 624260 672280 672490 724220 768560 873964 941486 1013908 1075984 1092455 1248520 1267385 1344560 1344980 1448440 1747928 1774339 1882972 2027816 2184910 2353715 2497040 2534770 2689960 2896880 3295201 3495856 3548678 3765944 4055632 4369820 4707430 5069540 5379920 6590402 7097356 7531888 8739640 8871695 9414860 10139080 12420373 13180804 14194712 16476005 17479280 17743390 18829720 20278160 23066407 24840746 26361608 28389424 32952010 35486780 37659440 46132814 49681492 52723216 62101865 65904020 70973560 92265628 99362984 115332035 124203730 131808040 141947120 161464849 184531256 198725968 230664070 248407460 263616080 322929698 369062512 461328140 496814920 645859396 807324245 922656280 993629840 1291718792 1614648490 1845312560 2583437584 3229296980 6458593960 12917187920
• Sum of all divisors σ(n): 37783831680
• Sum of proper divisors (its aliquot sum) s(n): 24866643760
• 12917187920 is an abundant number, because the sum of its proper divisors (24866643760) is greater than itself. Its abundance is 11949455840

Bases of 12917187920

• Binary: 1100000001111011001010010101010000₂
• Hexadecimal: 0x301ECA550
• Base-36: 5XMK5ZK

Squares and roots of 12917187920

• 12917187920 squared (12917187920²) is 166853743760593926400
• 12917187920 cubed (12917187920³) is 2155281163311119238119449088000
• The square root of 12917187920 is 113653.8073273395
• The cube root of 12917187920 is 2346.3312556875

Scales and comparisons

• 12,917,187,920 seconds is equal to 410 years, 37 weeks, 5 days, 11 hours, 45 minutes, 20 seconds.
• To count from 1 to 12,917,187,920 would take you about eight hundred twenty-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 12917187920 cubic inches would be around 195.5 feet tall.

Recreational maths with 12917187920

• 12917187920 backwards is 02978171921
• The number of decimal digits it has is: 11
• The sum of 12917187920's digits is 47
• More coming soon!