21157116120

Names of 21157116120

• Cardinal: 21157116120 can be written as Twenty-one billion, one hundred fifty-seven million, one hundred sixteen thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.115711612 × 10¹⁰

Factors of 21157116120

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 3913

Divisors of 21157116120

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 28 30 35 36 40 42 45 49 56 60 63 70 72 84 90 98 105 120 126 140 147 168 180 196 210 245 252 280 294 315 337 360 392 420 441 490 504 588 630 674 735 840 882 980 1011 1176 1260 1348 1470 1685 1764 1960 2022 2205 2359 2520 2696 2940 3033 3370 3528 3559 4044 4410 4718 5055 5880 6066 6740 7077 7118 8088 8820 9436 10110 10677 11795 12132 13480 14154 14236 15165 16513 17640 17795 18872 20220 21231 21354 23590 24264 24913 28308 28472 30330 32031 33026 35385 35590 40440 42462 42708 47180 49539 49826 53385 56616 60660 64062 66052 70770 71180 74739 82565 84924 85416 94360 99078 99652 106155 106770 121320 124565 128124 132104 141540 142360 148617 149478 160155 165130 169848 174391 198156 199304 212310 213540 224217 247695 249130 256248 283080 297234 298956 320310 330260 348782 373695 396312 424620 427080 448434 495390 498260 523173 594468 597912 640620 660520 697564 743085 747390 849240 871955 896868 990780 996520 1046346 1121085 1188936 1199383 1281240 1395128 1486170 1494780 1569519 1743910 1793736 1981560 2092692 2242170 2398766 2615865 2972340 2989560 3139038 3487820 3598149 4185384 4484340 4797532 5231730 5944680 5996915 6278076 6975640 7196298 7847595 8395681 8968680 9595064 10463460 10794447 11993830 12556152 14392596 15695190 16791362 17990745 20926920 21588894 23987660 25187043 28785192 31390380 33582724 35981490 41978405 43177788 47975320 50374086 53972235 58769767 62780760 67165448 71962980 75561129 83956810 86355576 100748172 107944470 117539534 125935215 143925960 151122258 167913620 176309301 201496344 215888940 235079068 251870430 293848835 302244516 335827240 352618602 377805645 431777880 470158136 503740860 528927903 587697670 604489032 705237204 755611290 881546505 1007481720 1057855806 1175395340 1410474408 1511222580 1763093010 2115711612 2350790680 2644639515 3022445160 3526186020 4231423224 5289279030 7052372040 10578558060 21157116120
• Sum of all divisors σ(n): 80246743200
• Sum of proper divisors (its aliquot sum) s(n): 59089627080
• 21157116120 is an abundant number, because the sum of its proper divisors (59089627080) is greater than itself. Its abundance is 37932510960

Bases of 21157116120

• Binary: 10011101101000011111111100011011000₂
• Hexadecimal: 0x4ED0FF8D8
• Base-36: 9PWEFA0

Squares and roots of 21157116120

• 21157116120 squared (21157116120²) is 447623562515163854400
• 21157116120 cubed (21157116120³) is 9470423690181400928367572928000
• The square root of 21157116120 is 145454.8593894341
• The cube root of 21157116120 is 2765.7875874233

Scales and comparisons

• 21,157,116,120 seconds is equal to 672 years, 38 weeks, 42 minutes.
• To count from 1 to 21,157,116,120 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 21157116120 cubic inches would be around 230.5 feet tall.

Recreational maths with 21157116120

• 21157116120 backwards is 02161175112
• The number of decimal digits it has is: 11
• The sum of 21157116120's digits is 27
• More coming soon!