8138257920

Names of 8138257920

• Cardinal: 8138257920 can be written as Eight billion, one hundred thirty-eight million, two hundred fifty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 8.13825792 × 10⁹

Factors of 8138257920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 3042

Divisors of 8138257920

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 27 30 32 36 39 40 45 48 52 54 60 64 65 72 78 80 81 90 96 104 108 117 120 128 130 135 144 156 160 162 180 192 195 208 216 234 240 256 260 270 288 312 320 324 351 360 384 390 405 416 432 468 480 512 520 540 576 585 624 640 648 702 720 768 780 810 832 864 936 960 1040 1053 1080 1152 1170 1248 1280 1296 1404 1440 1536 1560 1620 1664 1728 1755 1872 1920 2080 2106 2160 2304 2340 2496 2560 2592 2808 2880 3019 3120 3240 3328 3456 3510 3744 3840 4160 4212 4320 4608 4680 4992 5184 5265 5616 5760 6038 6240 6480 6656 6912 7020 7488 7680 8320 8424 8640 9057 9360 9984 10368 10530 11232 11520 12076 12480 12960 13824 14040 14976 15095 16640 16848 17280 18114 18720 19968 20736 21060 22464 23040 24152 24960 25920 27171 28080 29952 30190 33280 33696 34560 36228 37440 39247 41472 42120 44928 45285 48304 49920 51840 54342 56160 59904 60380 67392 69120 72456 74880 78494 81513 84240 89856 90570 96608 99840 103680 108684 112320 117741 120760 134784 135855 144912 149760 156988 163026 168480 179712 181140 193216 196235 207360 217368 224640 235482 241520 244539 269568 271710 289824 299520 313976 326052 336960 353223 362280 386432 392470 407565 434736 449280 470964 483040 489078 539136 543420 579648 588705 627952 652104 673920 706446 724560 772864 784940 815130 869472 898560 941928 966080 978156 1059669 1086840 1159296 1177410 1222695 1255904 1304208 1347840 1412892 1449120 1545728 1569880 1630260 1738944 1766115 1883856 1932160 1956312 2119338 2173680 2318592 2354820 2445390 2511808 2608416 2695680 2825784 2898240 3139760 3179007 3260520 3477888 3532230 3767712 3864320 3912624 4238676 4347360 4637184 4709640 4890780 5023616 5216832 5298345 5651568 5796480 6279520 6358014 6521040 6955776 7064460 7535424 7728640 7825248 8477352 8694720 9419280 9781560 10047232 10433664 10596690 11303136 11592960 12559040 12716028 13042080 13911552 14128920 15070848 15650496 15895035 16954704 17389440 18838560 19563120 20094464 20867328 21193380 22606272 23185920 25118080 25432056 26084160 28257840 30141696 31300992 31790070 33909408 34778880 37677120 39126240 41734656 42386760 45212544 50236160 50864112 52168320 56515680 60283392 62601984 63580140 67818816 69557760 75354240 78252480 84773520 90425088 100472320 101728224 104336640 113031360 125203968 127160280 135637632 150708480 156504960 169547040 180850176 203456448 208673280 226062720 254320560 271275264 301416960 313009920 339094080 406912896 452125440 508641120 542550528 626019840 678188160 813825792 904250880 1017282240 1356376320 1627651584 2034564480 2712752640 4069128960 8138257920
• Sum of all divisors σ(n): 31401271440
• Sum of proper divisors (its aliquot sum) s(n): 23263013520
• 8138257920 is an abundant number, because the sum of its proper divisors (23263013520) is greater than itself. Its abundance is 15124755600

Bases of 8138257920

• Binary: 111100101000100111111011000000000₂
• Hexadecimal: 0x1E513F600
• Base-36: 3QLB400

Squares and roots of 8138257920

• 8138257920 squared (8138257920²) is 66231241972442726400
• 8138257920 cubed (8138257920³) is 539006929533668439871193088000
• The square root of 8138257920 is 90212.2936189963
• The cube root of 8138257920 is 2011.4557509363

Scales and comparisons

• 8,138,257,920 seconds is equal to 258 years, 40 weeks, 19 hours, 12 minutes.
• To count from 1 to 8,138,257,920 would take you about five hundred seventeen 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 8138257920 cubic inches would be around 167.6 feet tall.

Recreational maths with 8138257920

• 8138257920 backwards is 0297528318
• 8138257920 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 8138257920's digits is 45
• More coming soon!