21154582672

Names of 21154582672

• Cardinal: 21154582672 can be written as Twenty-one billion, one hundred fifty-four million, five hundred eighty-two thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 2.1154582672 × 10¹⁰

Factors of 21154582672

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 90

Divisors of 21154582672

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 8 16 17 19 23 29 34 38 46 58 68 76 92 116 136 152 184 232 272 289 304 323 361 368 391 437 464 493 551 578 646 667 722 782 874 986 1102 1156 1292 1334 1444 1564 1748 1972 2204 2312 2584 2668 2888 3128 3496 3944 4408 4624 5168 5336 5491 5776 6137 6256 6647 6859 6992 7429 7888 8303 8381 8816 9367 10469 10672 10982 11339 12274 12673 13294 13718 14858 16606 16762 18734 20938 21964 22678 24548 25346 26588 27436 29716 33212 33524 37468 41876 43928 45356 49096 50692 53176 54872 59432 66424 67048 74936 83752 87856 90712 98192 101384 104329 106352 109744 116603 118864 126293 132848 134096 141151 149872 157757 159239 167504 177973 181424 192763 198911 202768 208658 215441 233206 240787 252586 282302 315514 318478 355946 385526 397822 417316 430882 466412 481574 505172 564604 631028 636956 711892 771052 795644 834632 861764 932824 963148 1010344 1129208 1262056 1273912 1423784 1542104 1591288 1669264 1723528 1865648 1926296 1982251 2020688 2258416 2399567 2524112 2547824 2681869 2847568 3025541 3084208 3182576 3381487 3447056 3662497 3852592 3964502 4093379 4574953 4799134 5363738 6051082 6762974 7324994 7929004 8186758 9149906 9598268 10727476 12102164 13525948 14649988 15858008 16373516 18299812 19196536 21454952 24204328 27051896 29299976 31716016 32747032 36599624 38393072 42909904 45591773 48408656 54103792 57485279 58599952 65494064 69587443 73199248 77774201 91183546 114970558 139174886 155548402 182367092 229941116 278349772 311096804 364734184 459882232 556699544 622193608 729468368 919764464 1113399088 1244387216 1322161417 2644322834 5288645668 10577291336 21154582672
• Sum of all divisors σ(n): 49610217600
• Sum of proper divisors (its aliquot sum) s(n): 28455634928
• 21154582672 is an abundant number, because the sum of its proper divisors (28455634928) is greater than itself. Its abundance is 7301052256

Bases of 21154582672

• Binary: 10011101100111010010101000010010000₂
• Hexadecimal: 0x4ECE95090
• Base-36: 9PUW4GG

Squares and roots of 21154582672

• 21154582672 squared (21154582672²) is 447516368026482659584
• 21154582672 cubed (21154582672³) is 9467022004489404907544161128448
• The square root of 21154582672 is 145446.1504200093
• The cube root of 21154582672 is 2765.6771870785

Scales and comparisons

• 21,154,582,672 seconds is equal to 672 years, 33 weeks, 5 days, 16 hours, 57 minutes, 52 seconds.
• To count from 1 to 21,154,582,672 would take you about one thousand, three hundred forty-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 21154582672 cubic inches would be around 230.5 feet tall.

Recreational maths with 21154582672

• 21154582672 backwards is 27628545112
• The number of decimal digits it has is: 11
• The sum of 21154582672's digits is 43
• More coming soon!