21228972480

Names of 21228972480

• Cardinal: 21228972480 can be written as Twenty-one billion, two hundred twenty-eight million, nine hundred seventy-two thousand, four hundred eighty.

Scientific notation

• Scientific notation: 2.122897248 × 10¹⁰

Factors of 21228972480

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2550

Divisors of 21228972480

• Number of divisors d(n): 280
• 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 64 72 80 81 90 96 108 120 135 144 160 162 180 192 216 240 270 288 320 324 360 379 405 432 480 540 576 648 720 758 810 864 960 1080 1137 1296 1440 1516 1620 1728 1895 2160 2161 2274 2592 2880 3032 3240 3411 3790 4320 4322 4548 5184 5685 6064 6480 6483 6822 7580 8640 8644 9096 10233 10805 11370 12128 12960 12966 13644 15160 17055 17288 18192 19449 20466 21610 22740 24256 25920 25932 27288 30320 30699 32415 34110 34576 36384 38898 40932 43220 45480 51165 51864 54576 58347 60640 61398 64830 68220 69152 72768 77796 81864 86440 90960 97245 102330 103728 109152 116694 121280 122796 129660 136440 138304 153495 155592 163728 172880 175041 181920 194490 204660 207456 218304 233388 245592 259320 272880 291735 306990 311184 327456 345760 350082 363840 388980 409320 414912 466776 491184 518640 545760 583470 613980 622368 654912 691520 700164 777960 818640 819019 875205 933552 982368 1037280 1091520 1166940 1227960 1244736 1400328 1555920 1637280 1638038 1750410 1867104 1964736 2074560 2333880 2455920 2457057 2800656 3111840 3274560 3276076 3500820 3734208 4095095 4667760 4911840 4914114 5601312 6223680 6552152 7001640 7371171 8190190 9335520 9823680 9828228 11202624 12285285 13104304 14003280 14742342 16380380 18671040 19656456 22113513 24570570 26208608 28006560 29484684 32760760 36855855 39312912 44227026 49141140 52417216 56013120 58969368 65521520 66340539 73711710 78625824 88454052 98282280 110567565 117938736 131043040 132681078 147423420 157251648 176908104 196564560 221135130 235877472 262086080 265362156 294846840 331702695 353816208 393129120 442270260 471754944 530724312 589693680 663405390 707632416 786258240 884540520 1061448624 1179387360 1326810780 1415264832 1769081040 2122897248 2358774720 2653621560 3538162080 4245794496 5307243120 7076324160 10614486240 21228972480
• Sum of all divisors σ(n): 75749475120
• Sum of proper divisors (its aliquot sum) s(n): 54520502640
• 21228972480 is an abundant number, because the sum of its proper divisors (54520502640) is greater than itself. Its abundance is 33291530160

Bases of 21228972480

• Binary: 10011110001010110000110100111000000₂
• Hexadecimal: 0x4F15869C0
• Base-36: 9R36K00

Squares and roots of 21228972480

• 21228972480 squared (21228972480²) is 450669272556597350400
• 21228972480 cubed (21228972480³) is 9567245584685624394082516992000
• The square root of 21228972480 is 145701.6557215463
• The cube root of 21228972480 is 2768.9152168647

Scales and comparisons

• 21,228,972,480 seconds is equal to 675 years, 5 days, 16 hours, 48 minutes.
• To count from 1 to 21,228,972,480 would take you about one thousand, three hundred fifty 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 21228972480 cubic inches would be around 230.7 feet tall.

Recreational maths with 21228972480

• 21228972480 backwards is 08427982212
• 21228972480 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21228972480's digits is 45
• More coming soon!