20978312355

Names of 20978312355

• Cardinal: 20978312355 can be written as Twenty billion, nine hundred seventy-eight million, three hundred twelve thousand, three hundred fifty-five.

Scientific notation

• Scientific notation: 2.0978312355 × 10¹⁰

Factors of 20978312355

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 424

Divisors of 20978312355

• Number of divisors d(n): 384
• Complete list of divisors:
  1 3 5 7 9 11 13 15 21 33 35 37 39 41 45 55 63 65 77 91 99 105 111 117 123 143 165 185 195 205 231 259 273 287 307 315 333 369 385 407 429 451 455 481 495 533 555 585 615 693 715 777 819 861 921 1001 1155 1221 1287 1295 1353 1365 1435 1443 1517 1535 1599 1665 1845 2035 2145 2149 2255 2331 2405 2583 2665 2763 2849 3003 3157 3367 3377 3465 3663 3731 3885 3991 4059 4095 4305 4329 4551 4605 4797 5005 5291 5863 6105 6435 6447 6765 7215 7585 7995 8547 9009 9471 10101 10131 10619 10745 11193 11359 11655 11973 12587 12915 13653 13815 14245 15015 15785 15873 16687 16835 16885 17589 18315 18655 19341 19721 19955 20295 21645 22755 23639 23985 25641 26455 27937 28413 29315 30303 30393 31857 32235 33579 34077 35919 37037 37761 41041 42735 43901 45045 47355 47619 50061 50505 50655 52767 53095 55965 56795 59163 59865 62935 68265 70917 79365 79513 83435 83811 87945 88109 95571 96705 98605 102231 111111 113283 116809 118195 123123 124949 128205 131703 138047 138457 139685 142065 147667 150183 151515 151965 159285 163631 167895 170385 177489 179595 185185 188805 205205 212751 216931 219505 238095 238539 250305 251433 263835 264327 295815 307307 333333 350427 354585 369369 374847 395109 397565 414141 415371 419055 440545 443001 465719 477855 490893 511155 555555 566415 584045 615615 624745 650793 658515 690235 692285 715617 738335 750915 792981 818155 874643 887445 921921 969199 1033669 1051281 1063755 1084655 1124541 1145417 1192695 1242423 1246113 1257165 1321635 1329003 1397157 1472679 1518517 1536535 1624337 1666665 1752135 1799941 1846845 1874235 1952379 1975545 2070705 2076855 2215005 2328595 2454465 2623929 2765763 2907597 3101007 3253965 3260033 3436251 3578085 3964905 4191471 4373215 4555551 4609605 4845995 4873011 5122909 5168345 5256405 5399823 5622705 5727085 6054347 6212115 6230565 6645015 6985785 7363395 7592585 7871787 8121685 8722791 8999705 9303021 9761895 9780099 10308753 11370359 12599587 13119645 13666653 13828815 14537985 14619033 15368727 15505035 16199469 16300165 17181255 18163041 20957355 22777755 24365055 25614545 26999115 29340297 30271735 34111077 35860363 37798761 39358935 42380429 43613955 46106181 46515105 48900495 51543765 54489123 56851795 62997935 66597817 68333265 73095165 76843635 80997345 90815205 102333231 107581089 113396283 127141287 146701485 170555385 179301815 188993805 199793451 211902145 230530905 272445615 322743267 332989085 381423861 466184719 511666155 537905445 566981415 599380353 635706435 998967255 1398554157 1613716335 1907119305 2330923595 2996901765 4195662471 6992770785 20978312355
• Sum of all divisors σ(n): 51532056576
• Sum of proper divisors (its aliquot sum) s(n): 30553744221
• 20978312355 is an abundant number, because the sum of its proper divisors (30553744221) is greater than itself. Its abundance is 9575431866

Bases of 20978312355

• Binary: 10011100010011001111010010010100011₂
• Hexadecimal: 0x4E267A4A3
• Base-36: 9MXY1ER

Squares and roots of 20978312355

• 20978312355 squared (20978312355²) is 440089589263945646025
• 20978312355 cubed (20978312355³) is 9232336867762706302054714138875
• The square root of 20978312355 is 144838.9186475789
• The cube root of 20978312355 is 2757.9740941923

Scales and comparisons

• 20,978,312,355 seconds is equal to 667 years, 2 weeks, 2 days, 12 hours, 59 minutes, 15 seconds.
• To count from 1 to 20,978,312,355 would take you about one thousand, three hundred thirty-four 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 20978312355 cubic inches would be around 229.8 feet tall.

Recreational maths with 20978312355

• 20978312355 backwards is 55321387902
• 20978312355 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20978312355's digits is 45
• More coming soon!