20400491520

Names of 20400491520

• Cardinal: 20400491520 can be written as Twenty billion, four hundred million, four hundred ninety-one thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.040049152 × 10¹⁰

Factors of 20400491520

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 892

Divisors of 20400491520

• Number of divisors d(n): 528
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 19 20 24 27 30 32 36 38 40 45 48 54 57 60 64 72 76 80 81 90 95 96 108 114 120 128 135 144 152 160 162 171 180 190 192 216 228 240 243 256 270 285 288 304 320 324 342 360 380 384 405 432 456 480 486 512 513 540 570 576 608 640 648 684 720 760 768 810 855 863 864 912 960 972 1024 1026 1080 1140 1152 1215 1216 1280 1296 1368 1440 1520 1536 1539 1620 1710 1726 1728 1824 1920 1944 2052 2160 2280 2304 2430 2432 2560 2565 2589 2592 2736 2880 3040 3072 3078 3240 3420 3452 3456 3648 3840 3888 4104 4315 4320 4560 4608 4617 4860 4864 5120 5130 5178 5184 5472 5760 6080 6156 6480 6840 6904 6912 7296 7680 7695 7767 7776 8208 8630 8640 9120 9216 9234 9720 9728 10260 10356 10368 10944 11520 12160 12312 12945 12960 13680 13808 13824 14592 15360 15390 15534 15552 16397 16416 17260 17280 18240 18468 19440 19456 20520 20712 20736 21888 23040 23085 23301 24320 24624 25890 25920 27360 27616 27648 29184 30780 31068 31104 32794 32832 34520 34560 36480 36936 38835 38880 41040 41424 41472 43776 46080 46170 46602 48640 49191 49248 51780 51840 54720 55232 58368 61560 62136 62208 65588 65664 69040 69120 69903 72960 73872 77670 77760 81985 82080 82848 82944 87552 92340 93204 97280 98382 98496 103560 103680 109440 110464 116505 123120 124272 124416 131176 131328 138080 138240 139806 145920 147573 147744 155340 155520 163970 164160 165696 175104 184680 186408 196764 196992 207120 207360 209709 218880 220928 233010 245955 246240 248544 248832 262352 262656 276160 279612 291840 295146 295488 310680 311040 327940 328320 331392 349515 369360 372816 393528 393984 414240 414720 419418 437760 441856 442719 466020 491910 492480 497088 524704 525312 552320 559224 590292 590976 621360 622080 655880 656640 662784 699030 737865 738720 745632 787056 787968 828480 838836 875520 883712 885438 932040 983820 984960 994176 1048545 1049408 1104640 1118448 1180584 1181952 1242720 1244160 1311760 1313280 1325568 1328157 1398060 1475730 1477440 1491264 1574112 1575936 1656960 1677672 1770876 1864080 1967640 1969920 1988352 2097090 2098816 2209280 2213595 2236896 2361168 2363904 2485440 2623520 2626560 2651136 2656314 2796120 2951460 2954880 2982528 3148224 3313920 3355344 3541752 3728160 3935280 3939840 3976704 3984471 4194180 4197632 4418560 4427190 4473792 4722336 4727808 4970880 5247040 5312628 5592240 5902920 5909760 5965056 6296448 6627840 6640785 6710688 7083504 7456320 7870560 7879680 7953408 7968942 8388360 8395264 8854380 8947584 9444672 9941760 10494080 10625256 11184480 11805840 11819520 11930112 12592896 13255680 13281570 13421376 14167008 14912640 15741120 15937884 16776720 16790528 17708760 17895168 18889344 19883520 19922355 20988160 21250512 22368960 23611680 23639040 23860224 25185792 26563140 26842752 28334016 29825280 31482240 31875768 33553440 35417520 35790336 37778688 39767040 39844710 41976320 42501024 44737920 47223360 50371584 53126280 53685504 56668032 59650560 62964480 63751536 67106880 70835040 71580672 75557376 79689420 83952640 85002048 89475840 94446720 106252560 107371008 113336064 119301120 125928960 127503072 134213760 141670080 151114752 159378840 170004096 178951680 188893440 212505120 214742016 226672128 251857920 255006144 268427520 283340160 318757680 340008192 357903360 377786880 425010240 453344256 510012288 536855040 566680320 637515360 680016384 755573760 850020480 1020024576 1073710080 1133360640 1275030720 1360032768 1700040960 2040049152 2266721280 2550061440 3400081920 4080098304 5100122880 6800163840 10200245760 20400491520
• Sum of all divisors σ(n): 77252797440
• Sum of proper divisors (its aliquot sum) s(n): 56852305920
• 20400491520 is an abundant number, because the sum of its proper divisors (56852305920) is greater than itself. Its abundance is 36451814400

Bases of 20400491520

• Binary: 10010111111111101101100110000000000₂
• Hexadecimal: 0x4BFF6CC00
• Base-36: 9DDXC00

Squares and roots of 20400491520

• 20400491520 squared (20400491520²) is 416180054257591910400
• 20400491520 cubed (20400491520³) is 8490277667675143663735799808000
• The square root of 20400491520 is 142830.2892246599
• The cube root of 20400491520 is 2732.4163607959

Scales and comparisons

• 20,400,491,520 seconds is equal to 648 years, 34 weeks, 6 days, 19 hours, 12 minutes.
• To count from 1 to 20,400,491,520 would take you about one thousand, two hundred ninety-seven 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 20400491520 cubic inches would be around 227.7 feet tall.

Recreational maths with 20400491520

• 20400491520 backwards is 02519400402
• 20400491520 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20400491520's digits is 27
• More coming soon!