12840403940

Names of 12840403940

• Cardinal: 12840403940 can be written as Twelve billion, eight hundred forty million, four hundred three thousand, nine hundred forty.

Scientific notation

• Scientific notation: 1.284040394 × 10¹⁰

Factors of 12840403940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 401

Divisors of 12840403940

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 7 10 13 14 20 26 28 35 49 52 65 67 70 91 98 130 134 140 182 196 245 260 268 307 335 343 364 455 469 490 614 637 670 686 871 910 938 980 1228 1274 1340 1372 1535 1715 1742 1820 1876 2149 2345 2401 2548 3070 3185 3283 3430 3484 3991 4298 4355 4459 4690 4802 6097 6140 6370 6566 6860 7982 8596 8710 8918 9380 9604 10745 12005 12194 12740 13132 15043 15964 16415 17420 17836 19955 20569 21490 22295 22981 24010 24388 27937 30086 30485 31213 32830 39910 41138 42679 42980 44590 45962 48020 55874 60172 60970 62426 65660 75215 79820 82276 85358 89180 91924 102845 105301 111748 114905 121940 124852 139685 143983 150430 156065 160867 170716 195559 205690 210602 213395 229810 267397 279370 287966 298753 300860 312130 321734 391118 411380 421204 426790 459620 526505 534794 558740 575932 597506 624260 643468 719915 737107 782236 804335 853580 977795 1007881 1053010 1069588 1195012 1336985 1368913 1439830 1474214 1493765 1608670 1871779 1955590 2015762 2091271 2106020 2673970 2737826 2879660 2948428 2987530 3217340 3685535 3743558 3911180 4031524 4182542 5039405 5347940 5475652 5975060 6844565 7055167 7371070 7487116 8365084 9358895 9582391 10078810 10456355 13102453 13689130 14110334 14742140 18717790 19164782 20157620 20912710 26204906 27378260 28220668 35275835 37435580 38329564 41825420 47911955 49386169 52409812 65512265 70551670 91717171 95823910 98772338 131024530 141103340 183434342 191647820 197544676 246930845 262049060 366868684 458585855 493861690 642020197 917171710 987723380 1284040394 1834343420 2568080788 3210100985 6420201970 12840403940
• Sum of all divisors σ(n): 34494516672
• Sum of proper divisors (its aliquot sum) s(n): 21654112732
• 12840403940 is an abundant number, because the sum of its proper divisors (21654112732) is greater than itself. Its abundance is 8813708792

Bases of 12840403940

• Binary: 1011111101010110010000001111100100₂
• Hexadecimal: 0x2FD5903E4
• Base-36: 5WCUF38

Squares and roots of 12840403940

• 12840403940 squared (12840403940²) is 164875973342367523600
• 12840403940 cubed (12840403940³) is 2117074097716670918961482984000
• The square root of 12840403940 is 113315.5061763393
• The cube root of 12840403940 is 2341.6728936453

Scales and comparisons

• 12,840,403,940 seconds is equal to 408 years, 14 weeks, 5 days, 18 hours, 52 minutes, 20 seconds.
• To count from 1 to 12,840,403,940 would take you about eight hundred sixteen 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 12840403940 cubic inches would be around 195.1 feet tall.

Recreational maths with 12840403940

• 12840403940 backwards is 04930404821
• 12840403940 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12840403940's digits is 35
• More coming soon!