12438909340

Names of 12438909340

• Cardinal: 12438909340 can be written as Twelve billion, four hundred thirty-eight million, nine hundred nine thousand, three hundred forty.

Scientific notation

• Scientific notation: 1.243890934 × 10¹⁰

Factors of 12438909340

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 826

Divisors of 12438909340

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 10 11 13 20 22 26 31 44 52 55 62 65 110 124 130 143 155 220 260 286 307 310 341 403 457 572 614 620 682 715 806 914 1228 1364 1430 1535 1612 1705 1828 2015 2285 2860 3070 3377 3410 3991 4030 4433 4570 5027 5941 6140 6754 6820 7982 8060 8866 9140 9517 10054 11882 13508 14167 15964 16885 17732 19034 19955 20108 22165 23764 25135 28334 29705 33770 38068 39910 43901 44330 47585 50270 56668 59410 65351 67540 70835 79820 87802 88660 95170 100540 104687 118820 123721 130702 140299 141670 155837 175604 184171 190340 209374 219505 247442 261404 280598 283340 311674 326755 368342 418748 439010 494884 523435 561196 618605 623348 653510 701495 736684 779185 878020 920855 1046870 1237210 1307020 1360931 1402990 1543289 1558370 1823887 1841710 2025881 2093740 2474420 2721862 2805980 3086578 3116740 3647774 3683420 4051762 4349269 5443724 6173156 6804655 7295548 7716445 8103524 8698538 9119435 10129405 13609310 15432890 17397076 18238870 20062757 20258810 21746345 27218620 30865780 36477740 40125514 40517620 43492690 47841959 56540497 80251028 86985380 95683918 100313785 113080994 191367836 200627570 226161988 239209795 282702485 401255140 478419590 565404970 621945467 956839180 1130809940 1243890934 2487781868 3109727335 6219454670 12438909340
• Sum of all divisors σ(n): 31851122688
• Sum of proper divisors (its aliquot sum) s(n): 19412213348
• 12438909340 is an abundant number, because the sum of its proper divisors (19412213348) is greater than itself. Its abundance is 6973304008

Bases of 12438909340

• Binary: 1011100101011010101011000110011100₂
• Hexadecimal: 0x2E56AB19C
• Base-36: 5PPSZVG

Squares and roots of 12438909340

• 12438909340 squared (12438909340²) is 154726465568739235600
• 12438909340 cubed (12438909340³) is 1924628477708178889729300504000
• The square root of 12438909340 is 111529.8585133147
• The cube root of 12438909340 is 2317.0074711657

Scales and comparisons

• 12,438,909,340 seconds is equal to 395 years, 26 weeks, 6 days, 20 hours, 35 minutes, 40 seconds.
• To count from 1 to 12,438,909,340 would take you about seven hundred ninety-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 12438909340 cubic inches would be around 193.1 feet tall.

Recreational maths with 12438909340

• 12438909340 backwards is 04390983421
• The number of decimal digits it has is: 11
• The sum of 12438909340's digits is 43
• More coming soon!