21007112490

Names of 21007112490

• Cardinal: 21007112490 can be written as Twenty-one billion, seven million, one hundred twelve thousand, four hundred ninety.

Scientific notation

• Scientific notation: 2.100711249 × 10¹⁰

Factors of 21007112490

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1011

Divisors of 21007112490

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 7 9 10 13 14 15 18 21 26 30 31 35 39 42 45 62 63 65 70 78 90 91 93 97 105 117 126 130 155 182 186 194 195 210 217 234 273 279 291 310 315 390 403 434 455 465 485 546 558 582 585 630 651 679 806 819 853 873 910 930 970 1085 1170 1209 1261 1302 1358 1365 1395 1455 1638 1706 1746 1953 2015 2037 2170 2418 2522 2559 2730 2790 2821 2910 3007 3255 3395 3627 3783 3906 4030 4074 4095 4265 4365 5118 5642 5971 6014 6045 6111 6305 6510 6790 7254 7566 7677 8190 8463 8530 8730 8827 9021 9765 10185 11089 11349 11942 12090 12222 12610 12795 14105 15035 15354 16926 17654 17913 18042 18135 18915 19530 20370 21049 22178 22698 25389 25590 26443 26481 27063 28210 29855 30070 30555 33267 35826 36270 37830 38385 39091 42098 42315 44135 45105 50778 52886 52962 53739 54126 55445 56745 59710 61110 63147 66534 76770 77623 78182 79329 79443 82741 84630 88270 89565 90210 99801 105245 107478 110890 113490 117273 126294 126945 132215 132405 135315 155246 158658 158886 165482 166335 179130 185101 189441 195455 199602 210490 232869 234546 237987 248223 253890 264430 264810 268695 270630 273637 315735 332670 343759 351819 370202 378882 388115 390910 396645 397215 413705 465738 475974 496446 499005 537390 547274 555303 579187 586365 631470 687518 698607 703638 744669 776230 793290 794430 820911 827410 925505 947205 998010 1031277 1075633 1110606 1158374 1164345 1172730 1189935 1241115 1368185 1397214 1489338 1641822 1665909 1718795 1737561 1759095 1851010 1894410 2062554 2151266 2328690 2379870 2406313 2462733 2482230 2564971 2736370 2776515 2895935 3093831 3226899 3331818 3437590 3475122 3493035 3518190 3723345 4104555 4812626 4925466 5129942 5156385 5212683 5378165 5553030 5791870 6187662 6453798 6986070 7218939 7446690 7529431 7694913 8209110 8329545 8687805 9680697 10312770 10425366 10756330 12031565 12313665 12824855 14437878 15058862 15389826 15469155 16134495 16659090 17375610 17954797 19361394 21656817 22588293 23084739 24063130 24627330 25649710 26063415 30938310 32268990 33344623 35909594 36094695 37647155 38474565 43313634 45176586 46169478 48403485 52126830 53864391 66689246 67764879 72189390 75294310 76949130 89773985 96806970 100033869 107728782 108284085 112941465 115423695 135529758 161593173 166723115 179547970 200067738 216568170 225882930 230847390 233412361 269321955 300101607 323186346 333446230 338824395 466824722 500169345 538643910 600203214 677648790 700237083 807965865 1000338690 1167061805 1400474166 1500508035 1615931730 2100711249 2334123610 3001016070 3501185415 4201422498 7002370830 10503556245 21007112490
• Sum of all divisors σ(n): 70188797952
• Sum of proper divisors (its aliquot sum) s(n): 49181685462
• 21007112490 is an abundant number, because the sum of its proper divisors (49181685462) is greater than itself. Its abundance is 28174572972

Bases of 21007112490

• Binary: 10011100100000111110001100100101010₂
• Hexadecimal: 0x4E41F192A
• Base-36: 9NF3BQI

Squares and roots of 21007112490

• 21007112490 squared (21007112490²) is 441298775167514000100
• 21007112490 cubed (21007112490³) is 9270413011643185193750571249000
• The square root of 21007112490 is 144938.3058062981
• The cube root of 21007112490 is 2759.2356145665

Scales and comparisons

• 21,007,112,490 seconds is equal to 667 years, 49 weeks, 6 days, 21 hours, 1 minute, 30 seconds.
• To count from 1 to 21,007,112,490 would take you about one thousand, three hundred thirty-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 21007112490 cubic inches would be around 229.9 feet tall.

Recreational maths with 21007112490

• 21007112490 backwards is 09421170012
• The number of decimal digits it has is: 11
• The sum of 21007112490's digits is 27
• More coming soon!