20718397440

Names of 20718397440

• Cardinal: 20718397440 can be written as Twenty billion, seven hundred eighteen million, three hundred ninety-seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.071839744 × 10¹⁰

Factors of 20718397440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 17316

Divisors of 20718397440

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 32 36 39 40 45 48 52 60 64 65 72 78 80 90 96 104 117 120 128 130 144 156 160 180 192 195 208 234 240 256 260 288 312 320 360 384 390 416 468 480 512 520 576 585 624 640 720 768 780 832 936 960 1024 1040 1152 1170 1248 1280 1440 1536 1560 1664 1872 1920 2048 2080 2304 2340 2496 2560 2880 3072 3120 3328 3744 3840 4160 4608 4680 4992 5120 5760 6144 6240 6656 7488 7680 8320 9216 9360 9984 10240 11520 12480 13312 14976 15360 16640 17293 18432 18720 19968 23040 24960 26624 29952 30720 33280 34586 37440 39936 46080 49920 51879 59904 66560 69172 74880 79872 86465 92160 99840 103758 119808 133120 138344 149760 155637 172930 199680 207516 224809 239616 259395 276688 299520 311274 345860 399360 415032 449618 518790 553376 599040 622548 674427 691720 778185 830064 899236 1037580 1106752 1124045 1198080 1245096 1348854 1383440 1556370 1660128 1798472 2023281 2075160 2213504 2248090 2490192 2697708 2766880 3112740 3320256 3372135 3596944 4046562 4150320 4427008 4496180 4980384 5395416 5533760 6225480 6640512 6744270 7193888 8093124 8300640 8854016 8992360 9960768 10116405 10790832 11067520 12450960 13281024 13488540 14387776 16186248 16601280 17708032 17984720 19921536 20232810 21581664 22135040 24901920 26562048 26977080 28775552 32372496 33202560 35416064 35969440 39843072 40465620 43163328 44270080 49803840 53124096 53954160 57551104 64744992 66405120 71938880 79686144 80931240 86326656 88540160 99607680 106248192 107908320 115102208 129489984 132810240 143877760 159372288 161862480 172653312 177080320 199215360 215816640 230204416 258979968 265620480 287755520 318744576 323724960 345306624 398430720 431633280 460408832 517959936 531240960 575511040 647449920 690613248 796861440 863266560 1035919872 1151022080 1294899840 1381226496 1593722880 1726533120 2071839744 2302044160 2589799680 3453066240 4143679488 5179599360 6906132480 10359198720 20718397440
• Sum of all divisors σ(n): 77334271560
• Sum of proper divisors (its aliquot sum) s(n): 56615874120
• 20718397440 is an abundant number, because the sum of its proper divisors (56615874120) is greater than itself. Its abundance is 35897476680

Bases of 20718397440

• Binary: 10011010010111010011010100000000000₂
• Hexadecimal: 0x4D2E9A800
• Base-36: 9IN75S0

Squares and roots of 20718397440

• 20718397440 squared (20718397440²) is 429251992481798553600
• 20718397440 cubed (20718397440³) is 8893413382149794399501942784000
• The square root of 20718397440 is 143938.8670234693
• The cube root of 20718397440 is 2746.5365738909

Scales and comparisons

• 20,718,397,440 seconds is equal to 658 years, 40 weeks, 4 days, 6 hours, 24 minutes.
• To count from 1 to 20,718,397,440 would take you about one thousand, three hundred seventeen 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 20718397440 cubic inches would be around 228.9 feet tall.

Recreational maths with 20718397440

• 20718397440 backwards is 04479381702
• 20718397440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20718397440's digits is 45
• More coming soon!