21384265728

Names of 21384265728

• Cardinal: 21384265728 can be written as Twenty-one billion, three hundred eighty-four million, two hundred sixty-five thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1384265728 × 10¹⁰

Factors of 21384265728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 486

Divisors of 21384265728

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 17 21 24 28 32 34 42 48 51 56 64 68 84 96 102 112 119 128 136 168 192 204 224 238 256 272 336 357 384 408 448 457 476 512 544 672 714 768 816 896 914 952 1024 1088 1344 1371 1428 1536 1632 1792 1828 1904 2048 2176 2688 2742 2856 3072 3199 3264 3584 3656 3808 4096 4352 5376 5484 5712 6144 6398 6528 7168 7312 7616 7769 8192 8704 9597 10752 10968 11424 12288 12796 13056 14336 14624 15232 15538 16384 17408 19194 21504 21936 22848 23307 24576 25592 26112 28672 29248 30464 31076 32768 34816 38388 43008 43872 45696 46614 49152 51184 52224 54383 57344 58496 60928 62152 65536 69632 76776 86016 87744 91392 93228 98304 102368 104448 108766 114688 116992 121856 124304 131072 139264 153552 163149 172032 175488 182784 186456 196608 204736 208896 217532 229376 233984 243712 248608 278528 307104 326298 344064 350976 365568 372912 393216 409472 417792 435064 458752 467968 487424 497216 557056 614208 652596 688128 701952 731136 745824 818944 835584 870128 917504 935936 974848 994432 1114112 1228416 1305192 1376256 1403904 1462272 1491648 1637888 1671168 1740256 1871872 1949696 1988864 2228224 2456832 2610384 2752512 2807808 2924544 2983296 3275776 3342336 3480512 3743744 3899392 3977728 4913664 5220768 5615616 5849088 5966592 6551552 6684672 6961024 7487488 7798784 7955456 9827328 10441536 11231232 11698176 11933184 13103104 13922048 14974976 15597568 15910912 19654656 20883072 22462464 23396352 23866368 26206208 27844096 29949952 31821824 39309312 41766144 44924928 46792704 47732736 52412416 55688192 59899904 63643648 78618624 83532288 89849856 95465472 104824832 111376384 127287296 157237248 167064576 179699712 190930944 209649664 222752768 254574592 314474496 334129152 381861888 419299328 445505536 509149184 628948992 668258304 763723776 891011072 1018298368 1257897984 1336516608 1527447552 1782022144 2673033216 3054895104 3564044288 5346066432 7128088576 10692132864 21384265728
• Sum of all divisors σ(n): 69155420544
• Sum of proper divisors (its aliquot sum) s(n): 47771154816
• 21384265728 is an abundant number, because the sum of its proper divisors (47771154816) is greater than itself. Its abundance is 26386889088

Bases of 21384265728

• Binary: 10011111010100110100000000000000000₂
• Hexadecimal: 0x4FA9A0000
• Base-36: 9TNN11C

Squares and roots of 21384265728

• 21384265728 squared (21384265728²) is 457286820725715369984
• 21384265728 cubed (21384265728³) is 9778742888310995274631691108352
• The square root of 21384265728 is 146233.5998599501
• The cube root of 21384265728 is 2775.6505026095

Scales and comparisons

• 21,384,265,728 seconds is equal to 679 years, 49 weeks, 4 days, 1 hour, 48 minutes, 48 seconds.
• To count from 1 to 21,384,265,728 would take you about one thousand, three hundred fifty-nine 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 21384265728 cubic inches would be around 231.3 feet tall.

Recreational maths with 21384265728

• 21384265728 backwards is 82756248312
• 21384265728 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21384265728's digits is 48
• More coming soon!