21739869720

Names of 21739869720

• Cardinal: 21739869720 can be written as Twenty-one billion, seven hundred thirty-nine million, eight hundred sixty-nine thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.173986972 × 10¹⁰

Factors of 21739869720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 22461

Divisors of 21739869720

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 29 30 31 36 40 45 54 58 60 62 72 87 90 93 108 116 120 124 135 145 155 174 180 186 216 232 248 261 270 279 290 310 348 360 372 435 465 522 540 558 580 620 696 744 783 837 870 899 930 1044 1080 1116 1160 1240 1305 1395 1566 1674 1740 1798 1860 2088 2232 2610 2697 2790 3132 3348 3480 3596 3720 3915 4185 4495 5220 5394 5580 6264 6696 7192 7830 8091 8370 8990 10440 10788 11160 13485 15660 16182 16740 17980 21576 22391 24273 26970 31320 32364 33480 35960 40455 44782 48546 53940 64728 67173 80910 89564 97092 107880 111955 121365 134346 161820 179128 194184 201519 223910 242730 268692 323640 335865 403038 447820 485460 537384 604557 649339 671730 694121 806076 895640 970920 1007595 1209114 1298678 1343460 1388242 1612152 1948017 2015190 2082363 2418228 2597356 2686920 2776484 3022785 3246695 3470605 3896034 4030380 4164726 4836456 5194712 5552968 5844051 6045570 6247089 6493390 6941210 7792068 8060760 8329452 9740085 10411815 11688102 12091140 12494178 12986780 13882420 15584136 16658904 17532153 18741267 19480170 20129509 20823630 23376204 24182280 24988356 25973560 27764840 29220255 31235445 35064306 37482534 38960340 40259018 41647260 46752408 49976712 58440510 60388527 62470890 70128612 74965068 77920680 80518036 83294520 87660765 93706335 100647545 116881020 120777054 124941780 140257224 149930136 161036072 175321530 181165581 187412670 201295090 233762040 241554108 249883560 301942635 350643060 362331162 374825340 402590180 483108216 543496743 603885270 701286120 724662324 749650680 805180360 905827905 1086993486 1207770540 1449324648 1811655810 2173986972 2415541080 2717483715 3623311620 4347973944 5434967430 7246623240 10869934860 21739869720
• Sum of all divisors σ(n): 77386752000
• Sum of proper divisors (its aliquot sum) s(n): 55646882280
• 21739869720 is an abundant number, because the sum of its proper divisors (55646882280) is greater than itself. Its abundance is 33907012560

Bases of 21739869720

• Binary: 10100001111110011000001011000011000₂
• Hexadecimal: 0x50FCC1618
• Base-36: 9ZJCUU0

Squares and roots of 21739869720

• 21739869720 squared (21739869720²) is 472621935442572878400
• 21739869720 cubed (21739869720³) is 10274739303335784918021402048000
• The square root of 21739869720 is 147444.4631717313
• The cube root of 21739869720 is 2790.9516466901

Scales and comparisons

• 21,739,869,720 seconds is equal to 691 years, 13 weeks, 3 days, 20 hours, 42 minutes.
• To count from 1 to 21,739,869,720 would take you about one thousand, three hundred eighty-two 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 21739869720 cubic inches would be around 232.6 feet tall.

Recreational maths with 21739869720

• 21739869720 backwards is 02796893712
• 21739869720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21739869720's digits is 54
• More coming soon!