21073879840

Names of 21073879840

• Cardinal: 21073879840 can be written as Twenty-one billion, seventy-three million, eight hundred seventy-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.107387984 × 10¹⁰

Factors of 21073879840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 185

Divisors of 21073879840

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 32 37 40 52 61 65 67 74 80 104 122 130 134 148 160 185 208 244 260 268 296 305 335 370 416 481 488 520 536 592 610 670 740 793 871 962 976 1040 1072 1184 1220 1340 1480 1586 1742 1924 1952 2080 2144 2257 2405 2440 2479 2680 2960 3172 3484 3848 3965 4087 4355 4489 4514 4810 4880 4958 5360 5920 6344 6968 7696 7930 8174 8710 8978 9028 9620 9760 9916 10720 11285 12395 12688 13936 15392 15860 16348 17420 17956 18056 19240 19832 20435 22445 22570 24790 25376 27872 29341 31720 32227 32696 34840 35912 36112 38480 39664 40870 44890 45140 49580 53131 58357 58682 63440 64454 65392 69680 71824 72224 76960 79328 81740 89780 90280 99160 106262 116714 117364 126880 128908 130784 139360 143648 146705 151219 161135 163480 166093 179560 180560 198320 212524 233428 234728 257816 265655 273829 291785 293410 302438 322270 326960 332186 359120 361120 396640 425048 466856 469456 515632 531310 547658 583570 586820 604876 644540 653920 664372 718240 756095 830465 850096 933712 938912 1031264 1062620 1095316 1167140 1173640 1209752 1289080 1328744 1369145 1512190 1660930 1700192 1867424 1965847 2125240 2159209 2190632 2334280 2347280 2419504 2578160 2657488 2738290 3024380 3321860 3559777 3931694 4250480 4318418 4381264 4668560 4694560 4839008 5156320 5314976 5476580 6048760 6643720 7119554 7863388 8500960 8636836 8762528 9337120 9829235 10131673 10796045 10953160 12097520 13287440 14239108 15726776 17273672 17798885 19658470 20263346 21592090 21906320 24195040 26574880 28478216 31453552 34547344 35597770 39316940 40526692 43184180 43812640 50658365 56956432 62907104 69094688 71195540 78633880 81053384 86368360 101316730 113912864 131711749 142391080 157267760 162106768 172736720 202633460 263423498 284782160 314535520 324213536 345473440 405266920 526846996 569564320 658558745 810533840 1053693992 1317117490 1621067680 2107387984 2634234980 4214775968 5268469960 10536939920 21073879840
• Sum of all divisors σ(n): 56816457264
• Sum of proper divisors (its aliquot sum) s(n): 35742577424
• 21073879840 is an abundant number, because the sum of its proper divisors (35742577424) is greater than itself. Its abundance is 14668697584

Bases of 21073879840

• Binary: 10011101000000110011110001100100000₂
• Hexadecimal: 0x4E819E320
• Base-36: 9OIUDR4

Squares and roots of 21073879840

• 21073879840 squared (21073879840²) is 444108411510758425600
• 21073879840 cubed (21073879840³) is 9359087300110995928361979904000
• The square root of 21073879840 is 145168.4533223385
• The cube root of 21073879840 is 2762.1557686593

Scales and comparisons

• 21,073,879,840 seconds is equal to 670 years, 4 weeks, 2 days, 15 hours, 30 minutes, 40 seconds.
• To count from 1 to 21,073,879,840 would take you about one thousand, three hundred forty 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 21073879840 cubic inches would be around 230.2 feet tall.

Recreational maths with 21073879840

• 21073879840 backwards is 04897837012
• The number of decimal digits it has is: 11
• The sum of 21073879840's digits is 49
• More coming soon!