20128723680

Names of 20128723680

• Cardinal: 20128723680 can be written as Twenty billion, one hundred twenty-eight million, seven hundred twenty-three thousand, six hundred eighty.

Scientific notation

• Scientific notation: 2.012872368 × 10¹⁰

Factors of 20128723680

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2806

Divisors of 20128723680

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 29 30 32 39 40 41 48 52 58 60 65 78 80 82 87 96 104 116 120 123 130 145 156 160 164 174 195 205 208 232 240 246 260 290 312 328 348 377 390 410 416 435 464 480 492 520 533 580 615 624 656 696 754 780 820 870 928 984 1040 1066 1131 1160 1189 1230 1248 1312 1392 1508 1560 1599 1640 1740 1885 1968 2080 2132 2262 2320 2378 2460 2665 2713 2784 3016 3120 3198 3280 3480 3567 3770 3936 4264 4524 4640 4756 4920 5330 5426 5655 5945 6032 6240 6396 6560 6960 7134 7540 7995 8139 8528 9048 9512 9840 10660 10852 11310 11890 12064 12792 13565 13920 14268 15080 15457 15990 16278 17056 17835 18096 19024 19680 21320 21704 22620 23780 25584 27130 28536 30160 30914 31980 32556 35269 35670 36192 38048 40695 42640 43408 45240 46371 47560 51168 54260 57072 60320 61828 63960 65112 70538 71340 77285 78677 81390 85280 86816 90480 92742 95120 105807 108520 111233 114144 123656 127920 130224 141076 142680 154570 157354 162780 176345 180960 185484 190240 211614 217040 222466 231855 236031 247312 255840 260448 282152 285360 309140 314708 325560 333699 352690 370968 393385 423228 434080 444932 463710 472062 494624 529035 556165 564304 570720 618280 629416 651120 667398 705380 741936 786770 846456 889864 927420 944124 1022801 1058070 1112330 1128608 1180155 1236560 1258832 1302240 1334796 1410760 1446029 1483872 1573540 1668495 1692912 1779728 1854840 1888248 2045602 2116140 2224660 2360310 2473120 2517664 2669592 2821520 2892058 3068403 3147080 3225757 3336990 3385824 3559456 3709680 3776496 4091204 4232280 4338087 4449320 4720620 5114005 5339184 5643040 5784116 6136806 6294160 6451514 6673980 7230145 7419360 7552992 8182408 8464560 8676174 8898640 9441240 9677271 10228010 10678368 11568232 12273612 12588320 12903028 13347960 14460290 15342015 16128785 16364816 16929120 17352348 17797280 18882480 19354542 20456020 21690435 23136464 24547224 25806056 26695920 28920580 30684030 32257570 32729632 34704696 37764960 38709084 40912040 41934841 43380870 46272928 48386355 49094448 51612112 53391840 57841160 61368060 64515140 69409392 77418168 81824080 83869682 86761740 96772710 98188896 103224224 115682320 122736120 125804523 129030280 138818784 154836336 163648160 167739364 173523480 193545420 209674205 231364640 245472240 251609046 258060560 309672672 335478728 347046960 387090840 419348410 490944480 503218092 516121120 629022615 670957456 694093920 774181680 838696820 1006436184 1258045230 1341914912 1548363360 1677393640 2012872368 2516090460 3354787280 4025744736 5032180920 6709574560 10064361840 20128723680
• Sum of all divisors σ(n): 72386939520
• Sum of proper divisors (its aliquot sum) s(n): 52258215840
• 20128723680 is an abundant number, because the sum of its proper divisors (52258215840) is greater than itself. Its abundance is 32129492160

Bases of 20128723680

• Binary: 10010101111110000111111001011100000₂
• Hexadecimal: 0x4AFC3F2E0
• Base-36: 98W4ELC

Squares and roots of 20128723680

• 20128723680 squared (20128723680²) is 405165516985792742400
• 20128723680 cubed (20128723680³) is 8155464736071368597519020032000
• The square root of 20128723680 is 141875.7332315855
• The cube root of 20128723680 is 2720.2286644555

Scales and comparisons

• 20,128,723,680 seconds is equal to 640 years, 1 week, 4 days, 8 hours, 8 minutes.
• To count from 1 to 20,128,723,680 would take you about one thousand, two hundred eighty 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 20128723680 cubic inches would be around 226.7 feet tall.

Recreational maths with 20128723680

• 20128723680 backwards is 08632782102
• 20128723680 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20128723680's digits is 39
• More coming soon!