20747456640

Names of 20747456640

• Cardinal: 20747456640 can be written as Twenty billion, seven hundred forty-seven million, four hundred fifty-six thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.074745664 × 10¹⁰

Factors of 20747456640

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 71

Divisors of 20747456640

• Number of divisors d(n): 416
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 61 64 72 80 81 90 96 108 120 122 128 135 144 160 162 180 183 192 216 240 243 244 270 288 305 320 324 360 366 384 405 432 480 486 488 540 549 576 610 640 648 720 729 732 810 864 915 960 972 976 1080 1098 1152 1215 1220 1296 1440 1458 1464 1620 1647 1728 1830 1920 1944 1952 2160 2187 2196 2430 2440 2592 2745 2880 2916 2928 3240 3294 3456 3645 3660 3888 3904 4320 4374 4392 4860 4880 4941 5184 5490 5760 5832 5856 6480 6561 6588 7290 7320 7776 7808 8235 8640 8748 8784 9720 9760 9882 10368 10935 10980 11664 11712 12960 13122 13176 14580 14640 14823 15552 16470 17280 17496 17568 19440 19520 19683 19764 21870 21960 23328 23424 24705 25920 26244 26352 29160 29280 29646 31104 32805 32940 34992 35136 38880 39040 39366 39528 43740 43920 44469 46656 49410 51840 52488 52704 58320 58560 59049 59292 65610 65880 69984 70272 74115 77760 78732 79056 87480 87840 88938 93312 98415 98820 104976 105408 116640 117120 118098 118584 131220 131760 133407 139968 148230 155520 157464 158112 174960 175680 177147 177876 196830 197640 209952 210816 222345 233280 236196 237168 262440 263520 266814 279936 295245 296460 314928 316224 349920 351360 354294 355752 393660 395280 400221 419904 444690 466560 472392 474336 524880 527040 531441 533628 590490 592920 629856 632448 667035 699840 708588 711504 787320 790560 800442 839808 885735 889380 944784 948672 1049760 1054080 1062882 1067256 1180980 1185840 1200663 1259712 1334070 1399680 1417176 1423008 1574640 1581120 1600884 1771470 1778760 1889568 1897344 2001105 2099520 2125764 2134512 2361960 2371680 2401326 2519424 2657205 2668140 2834352 2846016 3149280 3162240 3201768 3542940 3557520 3601989 3779136 4002210 4199040 4251528 4269024 4723920 4743360 4802652 5314410 5336280 5668704 5692032 6003315 6298560 6403536 7085880 7115040 7203978 7558272 8004420 8503056 8538048 9447840 9486720 9605304 10628820 10672560 10805967 11337408 12006630 12597120 12807072 14171760 14230080 14407956 16008840 17006112 17076096 18009945 18895680 19210608 21257640 21345120 21611934 22674816 24013260 25614144 28343520 28460160 28815912 32017680 32417901 34012224 36019890 37791360 38421216 42515280 42690240 43223868 48026520 51228288 54029835 56687040 57631824 64035360 64835802 68024448 72039780 76842432 85030560 85380480 86447736 96053040 108059670 113374080 115263648 128070720 129671604 144079560 153684864 162089505 170061120 172895472 192106080 216119340 230527296 256141440 259343208 288159120 324179010 340122240 345790944 384212160 432238680 461054592 518686416 576318240 648358020 691581888 768424320 864477360 1037372832 1152636480 1296716040 1383163776 1728954720 2074745664 2305272960 2593432080 3457909440 4149491328 5186864160 6915818880 10373728320 20747456640
• Sum of all divisors σ(n): 75618692460
• Sum of proper divisors (its aliquot sum) s(n): 54871235820
• 20747456640 is an abundant number, because the sum of its proper divisors (54871235820) is greater than itself. Its abundance is 34123779180

Bases of 20747456640

• Binary: 10011010100101001010001000010000000₂
• Hexadecimal: 0x4D4A51080
• Base-36: 9J4I000

Squares and roots of 20747456640

• 20747456640 squared (20747456640²) is 430456957028680089600
• 20747456640 cubed (20747456640³) is 8930887051338883395407314944000
• The square root of 20747456640 is 144039.7745069049
• The cube root of 20747456640 is 2747.8200526701

Scales and comparisons

• 20,747,456,640 seconds is equal to 659 years, 36 weeks, 4 days, 14 hours, 24 minutes.
• To count from 1 to 20,747,456,640 would take you about one thousand, three hundred nineteen 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 20747456640 cubic inches would be around 229 feet tall.

Recreational maths with 20747456640

• 20747456640 backwards is 04665474702
• 20747456640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20747456640's digits is 45
• More coming soon!