18990420672

Names of 18990420672

• Cardinal: 18990420672 can be written as Eighteen billion, nine hundred ninety million, four hundred twenty thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 1.8990420672 × 10¹⁰

Factors of 18990420672

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2101

Divisors of 18990420672

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 6 8 12 16 23 24 32 41 46 48 53 64 69 82 92 96 106 123 138 159 164 184 192 212 246 276 318 328 368 424 492 552 636 656 736 848 943 984 1104 1219 1272 1312 1472 1696 1886 1968 1979 2173 2208 2438 2544 2624 2829 3392 3657 3772 3936 3958 4346 4416 4876 5088 5658 5937 6519 7314 7544 7872 7916 8692 9752 10176 11316 11874 13038 14628 15088 15832 17384 19504 22632 23748 26076 29256 30176 31664 34768 39008 45264 45517 47496 49979 52152 58512 60352 63328 69536 78016 81139 90528 91034 94992 99958 104304 104887 117024 126656 136551 139072 149937 162278 181056 182068 189984 199916 208608 209774 234048 243417 273102 299874 314661 324556 364136 379968 399832 417216 419548 486834 546204 599748 629322 649112 728272 799664 839096 973668 1092408 1199496 1258644 1298224 1456544 1599328 1678192 1866197 1947336 2184816 2398992 2412401 2517288 2596448 2913088 3198656 3356384 3732394 3894672 4300367 4369632 4797984 4824802 5034576 5192896 5598591 6712768 7237203 7464788 7789344 8600734 8739264 9595968 9649604 10069152 11197182 12901101 14474406 14929576 15578688 17201468 19299208 20138304 22394364 25802202 28948812 29859152 34402936 38598416 44788728 51604404 57897624 59718304 68805872 77196832 89577456 98908441 103208808 115795248 119436608 137611744 154393664 179154912 197816882 206417616 231590496 275223488 296725323 358309824 395633764 412835232 463180992 593450646 791267528 825670464 1186901292 1582535056 2373802584 3165070112 4747605168 6330140224 9495210336 18990420672
• Sum of all divisors σ(n): 54749882880
• Sum of proper divisors (its aliquot sum) s(n): 35759462208
• 18990420672 is an abundant number, because the sum of its proper divisors (35759462208) is greater than itself. Its abundance is 16769041536

Bases of 18990420672

• Binary: 10001101011111010101101001011000000₂
• Hexadecimal: 0x46BEAD2C0
• Base-36: 8Q2EMDC

Squares and roots of 18990420672

• 18990420672 squared (18990420672²) is 360636077299524931584
• 18990420672 cubed (18990420672³) is 6848630817417888196532179304448
• The square root of 18990420672 is 137805.7352652639
• The cube root of 18990420672 is 2667.9531260613

Scales and comparisons

• 18,990,420,672 seconds is equal to 603 years, 43 weeks, 3 days, 12 hours, 51 minutes, 12 seconds.
• To count from 1 to 18,990,420,672 would take you about one thousand, two hundred seven 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 18990420672 cubic inches would be around 222.3 feet tall.

Recreational maths with 18990420672

• 18990420672 backwards is 27602409981
• 18990420672 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18990420672's digits is 48
• More coming soon!