78381649920

Names of 78381649920

• Cardinal: 78381649920 can be written as Seventy-eight billion, three hundred eighty-one million, six hundred forty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 7.838164992 × 10¹⁰

Factors of 78381649920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 5927

Divisors of 78381649920

• Number of divisors d(n): 416
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 31 32 35 40 42 48 56 60 62 64 70 80 84 93 96 105 112 120 124 128 140 155 160 168 186 192 210 217 224 240 248 256 280 310 320 336 372 384 420 434 448 465 480 496 512 560 620 640 651 672 744 768 840 868 896 930 960 992 1024 1085 1120 1240 1280 1302 1344 1488 1536 1680 1736 1792 1860 1920 1984 2048 2170 2240 2480 2560 2604 2688 2976 3072 3255 3360 3472 3584 3720 3840 3968 4096 4340 4480 4960 5120 5208 5376 5879 5952 6144 6510 6720 6944 7168 7440 7680 7936 8680 8960 9920 10240 10416 10752 11758 11904 12288 13020 13440 13888 14336 14880 15360 15872 17360 17637 17920 19840 20480 20832 21504 23516 23808 26040 26880 27776 28672 29395 29760 30720 31744 34720 35274 35840 39680 41153 41664 43008 47032 47616 52080 53760 55552 58790 59520 61440 63488 69440 70548 71680 79360 82306 83328 86016 88185 94064 95232 104160 107520 111104 117580 119040 123459 126976 138880 141096 143360 158720 164612 166656 176370 182249 188128 190464 205765 208320 215040 222208 235160 238080 246918 277760 282192 317440 329224 333312 352740 364498 376256 380928 411530 416640 430080 444416 470320 476160 493836 546747 555520 564384 617295 634880 658448 666624 705480 728996 752512 823060 833280 888832 911245 940640 952320 987672 1093494 1111040 1128768 1234590 1275743 1316896 1333248 1410960 1457992 1505024 1646120 1666560 1822490 1881280 1904640 1975344 2186988 2222080 2257536 2469180 2551486 2633792 2666496 2733735 2821920 2915984 3010048 3292240 3333120 3644980 3762560 3827229 3950688 4373976 4444160 4515072 4938360 5102972 5267584 5467470 5643840 5831968 6020096 6378715 6584480 6666240 7289960 7525120 7654458 7901376 8747952 9030144 9876720 10205944 10535168 10934940 11287680 11663936 12040192 12757430 13168960 13332480 14579920 15050240 15308916 15802752 17495904 18060288 19136145 19753440 20411888 21070336 21869880 22575360 23327872 24080384 25514860 26337920 29159840 30100480 30617832 31605504 34991808 36120576 38272290 39506880 40823776 42140672 43739760 45150720 46655744 51029720 52675840 58319680 60200960 61235664 63211008 69983616 72241152 76544580 79013760 81647552 84281344 87479520 90301440 93311488 102059440 105351680 116639360 120401920 122471328 126422016 139967232 153089160 158027520 163295104 168562688 174959040 180602880 186622976 204118880 210703360 233278720 244942656 252844032 279934464 306178320 316055040 326590208 349918080 361205760 373245952 408237760 421406720 466557440 489885312 505688064 559868928 612356640 632110080 653180416 699836160 746491904 816475520 842813440 933114880 979770624 1119737856 1224713280 1264220160 1306360832 1399672320 1632951040 1866229760 1959541248 2239475712 2449426560 2528440320 2612721664 2799344640 3265902080 3732459520 3919082496 4898853120 5225443328 5598689280 6531804160 7838164992 9797706240 11197378560 13063608320 15676329984 19595412480 26127216640 39190824960 78381649920
• Sum of all divisors σ(n): 295913963520
• Sum of proper divisors (its aliquot sum) s(n): 217532313600
• 78381649920 is an abundant number, because the sum of its proper divisors (217532313600) is greater than itself. Its abundance is 139150663680

Bases of 78381649920

• Binary: 1001000111111111010010001000000000000₂
• Hexadecimal: 0x123FE91000
• Base-36: 100AES5C

Squares and roots of 78381649920

• 78381649920 squared (78381649920²) is 6143683044181436006400
• 78381649920 cubed (78381649920³) is 481552013588469210016527679488000
• The square root of 78381649920 is 279967.2300823793
• The cube root of 78381649920 is 4279.6159785883

Scales and comparisons

• 78,381,649,920 seconds is equal to 2,492 years, 15 weeks, 2 days, 32 minutes.
• To count from 1 to 78,381,649,920 would take you about four thousand, nine hundred eighty-four 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 78381649920 cubic inches would be around 356.6 feet tall.

Recreational maths with 78381649920

• 78381649920 backwards is 02994618387
• The number of decimal digits it has is: 11
• The sum of 78381649920's digits is 57
• More coming soon!