18728221248

Names of 18728221248

• Cardinal: 18728221248 can be written as Eighteen billion, seven hundred twenty-eight million, two hundred twenty-one thousand, two hundred forty-eight.

Scientific notation

• Scientific notation: 1.8728221248 × 10¹⁰

Factors of 18728221248

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 498

Divisors of 18728221248

• Number of divisors d(n): 420
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 27 32 33 36 44 48 54 64 66 72 73 81 88 96 99 108 121 132 144 146 162 176 192 198 216 219 242 264 288 292 297 324 352 363 396 409 432 438 484 528 576 584 594 648 657 704 726 792 803 818 864 876 891 968 1056 1089 1168 1188 1227 1296 1314 1452 1584 1606 1636 1728 1752 1782 1936 1971 2112 2178 2336 2376 2409 2454 2592 2628 2904 3168 3212 3267 3272 3504 3564 3681 3872 3942 4356 4499 4672 4752 4818 4908 5184 5256 5808 5913 6336 6424 6534 6544 7008 7128 7227 7362 7744 7884 8712 8833 8998 9504 9636 9801 9816 10512 11043 11616 11826 12848 13068 13088 13497 14016 14256 14454 14724 15768 17424 17666 17996 19008 19272 19602 19632 21024 21681 22086 23232 23652 25696 26136 26176 26499 26994 28512 28908 29448 29857 31536 33129 34848 35332 35992 38544 39204 39264 40491 42048 43362 44172 47304 49489 51392 52272 52998 53988 57024 57816 58896 59714 63072 65043 66258 69696 70664 71984 77088 78408 78528 79497 80982 86724 88344 89571 94608 98978 104544 105996 107976 115632 117792 119428 121473 126144 130086 132516 141328 143968 148467 154176 156816 158994 161964 173448 176688 179142 189216 197956 209088 211992 215952 231264 235584 238491 238856 242946 260172 265032 268713 282656 287936 296934 313632 317988 323928 328427 346896 353376 358284 364419 378432 395912 423984 431904 445401 462528 476982 477712 485892 520344 530064 537426 565312 593868 627264 635976 647856 656854 693792 706752 715473 716568 728838 791824 806139 847968 863808 890802 953964 955424 971784 985281 1040688 1060128 1074852 1187736 1271952 1295712 1313708 1336203 1387584 1430946 1433136 1457676 1583648 1612278 1695936 1781604 1907928 1910848 1943568 1970562 2081376 2120256 2149704 2375472 2418417 2543904 2591424 2627416 2672406 2861892 2866272 2915352 2955843 3167296 3224556 3563208 3612697 3815856 3887136 3941124 4008609 4162752 4299408 4750944 4836834 5087808 5254832 5344812 5723784 5732544 5830704 5911686 6449112 7126416 7225394 7631712 7774272 7882248 8017218 8598816 8867529 9501888 9673668 10509664 10689624 10838091 11447568 11661408 11823372 12898224 14252832 14450788 15263424 15764496 16034436 17197632 17735058 19347336 21019328 21379248 21676182 22895136 23322816 23646744 25796448 26602587 28505664 28901576 31528992 32068872 32514273 35470116 38694672 42758496 43352364 45790272 47293488 51592896 53205174 57803152 63057984 64137744 65028546 70940232 77389344 85516992 86704728 94586976 97542819 106410348 115606304 128275488 130057092 141880464 154778688 173409456 189173952 195085638 212820696 231212608 256550976 260114184 283760928 292628457 346818912 390171276 425641392 520228368 567521856 585256914 693637824 780342552 851282784 1040456736 1170513828 1560685104 1702565568 2080913472 2341027656 3121370208 4682055312 6242740416 9364110624 18728221248
• Sum of all divisors σ(n): 62009225740
• Sum of proper divisors (its aliquot sum) s(n): 43281004492
• 18728221248 is an abundant number, because the sum of its proper divisors (43281004492) is greater than itself. Its abundance is 24552783244

Bases of 18728221248

• Binary: 10001011100010010011111101001000000₂
• Hexadecimal: 0x45C49FA40
• Base-36: 8LQAS00

Squares and roots of 18728221248

• 18728221248 squared (18728221248²) is 350746271114038677504
• 18728221248 cubed (18728221248³) is 6568853767334707791124232404992
• The square root of 18728221248 is 136851.0915119057
• The cube root of 18728221248 is 2655.6174298975

Scales and comparisons

• 18,728,221,248 seconds is equal to 595 years, 25 weeks, 6 days, 19 hours, 40 minutes, 48 seconds.
• To count from 1 to 18,728,221,248 would take you about one thousand, one hundred ninety 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 18728221248 cubic inches would be around 221.3 feet tall.

Recreational maths with 18728221248

• 18728221248 backwards is 84212282781
• The number of decimal digits it has is: 11
• The sum of 18728221248's digits is 45
• More coming soon!