815421296640

Names of 815421296640

• Cardinal: 815421296640 can be written as Eight hundred fifteen billion, four hundred twenty-one million, two hundred ninety-six thousand, six hundred forty.

Scientific notation

• Scientific notation: 8.1542129664 × 10¹¹

Factors of 815421296640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 2411

Divisors of 815421296640

• Number of divisors d(n): 416
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 61 64 80 96 97 120 122 128 160 183 192 194 240 244 256 291 305 320 366 384 388 480 485 488 512 582 610 640 732 768 776 915 960 970 976 1024 1164 1220 1280 1455 1464 1536 1552 1830 1920 1940 1952 2048 2243 2328 2440 2560 2910 2928 3072 3104 3660 3840 3880 3904 4096 4486 4656 4880 5120 5820 5856 5917 6144 6208 6729 7320 7680 7760 7808 8972 9312 9760 10240 11215 11640 11712 11834 12288 12416 13458 14640 15360 15520 15616 17751 17944 18624 19520 20480 22430 23280 23424 23668 24832 26916 29280 29585 30720 31040 31232 33645 35502 35888 37248 39040 44860 46560 46848 47336 49664 53832 58560 59170 61440 62080 62464 67290 71004 71776 74496 78080 88755 89720 93120 93696 94672 99328 107664 117120 118340 124160 124928 134580 136823 142008 143552 148992 156160 177510 179440 186240 187392 189344 198656 215328 217571 234240 236680 248320 249856 269160 273646 284016 287104 297984 312320 355020 358880 372480 374784 378688 397312 410469 430656 435142 468480 473360 496640 538320 547292 568032 574208 595968 624640 652713 684115 710040 717760 744960 749568 757376 820938 861312 870284 936960 946720 993280 1076640 1087855 1094584 1136064 1148416 1191936 1249280 1305426 1368230 1420080 1435520 1489920 1514752 1641876 1722624 1740568 1873920 1893440 1986560 2052345 2153280 2175710 2189168 2272128 2296832 2610852 2736460 2840160 2871040 2979840 3029504 3263565 3283752 3445248 3481136 3747840 3786880 4104690 4306560 4351420 4378336 4544256 4593664 5221704 5472920 5680320 5742080 5959680 6059008 6527130 6567504 6890496 6962272 7573760 8209380 8613120 8702840 8756672 9088512 9187328 10443408 10945840 11360640 11484160 12118016 13054260 13135008 13271831 13780992 13924544 15147520 16418760 17226240 17405680 17513344 18177024 20886816 21891680 22721280 22968320 24236032 26108520 26270016 26543662 27561984 27849088 30295040 32837520 34452480 34811360 35026688 36354048 39815493 41773632 43783360 45442560 45936640 52217040 52540032 53087324 55698176 60590080 65675040 66359155 68904960 69622720 70053376 72708096 79630986 83547264 87566720 90885120 104434080 105080064 106174648 111396352 121180160 131350080 132718310 137809920 139245440 140106752 159261972 167094528 175133440 181770240 199077465 208868160 210160128 212349296 222792704 262700160 265436620 278490880 280213504 318523944 334189056 350266880 363540480 398154930 417736320 420320256 424698592 445585408 525400320 530873240 556981760 560427008 637047888 668378112 700533760 796309860 835472640 840640512 849397184 891170816 1050800640 1061746480 1113963520 1274095776 1336756224 1401067520 1592619720 1670945280 1681281024 1698794368 2101601280 2123492960 2227927040 2548191552 2673512448 2802135040 3185239440 3341890560 3397588736 4203202560 4246985920 4455854080 5096383104 6370478880 6683781120 6795177472 8406405120 8493971840 10192766208 12740957760 13367562240 13590354944 16987943680 20385532416 25481915520 27180709888 33975887360 40771064832 50963831040 54361419776 67951774720 81542129664 101927662080 135903549440 163084259328 203855324160 271807098880 407710648320 815421296640
• Sum of all divisors σ(n): 2680333197696
• Sum of proper divisors (its aliquot sum) s(n): 1864911901056
• 815421296640 is an abundant number, because the sum of its proper divisors (1864911901056) is greater than itself. Its abundance is 1049490604416

Bases of 815421296640

• Binary: 1011110111011010111001011001000000000000₂
• Hexadecimal: 0xBDDAE59000
• Base-36: AELKSB9C

Squares and roots of 815421296640

• 815421296640 squared (815421296640²) is 664911891014058875289600
• 815421296640 cubed (815421296640³) is 542183316322038252557945687506944000
• The square root of 815421296640 is 903006.8087450947
• The cube root of 815421296640 is 9342.4478719213

Scales and comparisons

• 815,421,296,640 seconds is equal to 25,927 years, 45 weeks, 3 days, 11 hours, 44 minutes.
• To count from 1 to 815,421,296,640 would take you about fifty-one thousand, eight hundred fifty-five 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 815421296640 cubic inches would be around 778.5 feet tall.

Recreational maths with 815421296640

• 815421296640 backwards is 046692124518
• 815421296640 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 815421296640's digits is 48
• More coming soon!