21271840720

Names of 21271840720

• Cardinal: 21271840720 can be written as Twenty-one billion, two hundred seventy-one million, eight hundred forty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.127184072 × 10¹⁰

Factors of 21271840720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1131

Divisors of 21271840720

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 23 26 40 46 52 65 67 80 92 104 115 130 134 169 184 208 230 260 268 299 335 338 368 460 520 536 598 670 676 845 871 920 1021 1040 1072 1196 1340 1352 1495 1541 1690 1742 1840 2042 2392 2680 2704 2990 3082 3380 3484 3887 4084 4355 4784 5105 5360 5980 6164 6760 6968 7705 7774 8168 8710 10210 11323 11960 12328 13273 13520 13936 15410 15548 16336 17420 19435 20033 20420 22646 23483 23920 24656 26546 30820 31096 34840 38870 40066 40840 45292 46966 53092 56615 61640 62192 66365 68407 69680 77740 80132 81680 90584 93932 100165 106184 113230 117415 123280 132730 136814 155480 160264 172549 181168 187864 200330 212368 226460 234830 260429 265460 273628 305279 310960 320528 342035 345098 375728 400660 452920 469660 520858 530920 547256 610558 684070 690196 801320 862745 889291 905840 939320 1041716 1061840 1094512 1221116 1302145 1368140 1380392 1526395 1573361 1602640 1725490 1778582 1878640 2083432 2442232 2604290 2736280 2760784 3052790 3146722 3450980 3557164 3968627 4166864 4446455 4884464 5208580 5472560 6105580 6293444 6901960 7114328 7866805 7937254 8892910 10417160 11560783 12211160 12586888 13803920 14228656 15733610 15874508 17785820 19843135 20453693 20834320 23121566 24422320 25173776 31467220 31749016 35571640 39686270 40907386 46243132 57803915 62934440 63498032 71143280 79372540 81814772 92486264 102268465 115607830 125868880 158745080 163629544 184972528 204536930 231215660 265898009 317490160 327259088 409073860 462431320 531796018 818147720 924862640 1063592036 1329490045 1636295440 2127184072 2658980090 4254368144 5317960180 10635920360 21271840720
• Sum of all divisors σ(n): 56772116352
• Sum of proper divisors (its aliquot sum) s(n): 35500275632
• 21271840720 is an abundant number, because the sum of its proper divisors (35500275632) is greater than itself. Its abundance is 14228434912

Bases of 21271840720

• Binary: 10011110011111001101000011111010000₂
• Hexadecimal: 0x4F3E687D0
• Base-36: 9RSPDCG

Squares and roots of 21271840720

• 21271840720 squared (21271840720²) is 452491207617050118400
• 21271840720 cubed (21271840720³) is 9625320895630340874861941248000
• The square root of 21271840720 is 145848.6911837059
• The cube root of 21271840720 is 2770.7777456115

Scales and comparisons

• 21,271,840,720 seconds is equal to 676 years, 19 weeks, 4 days, 20 hours, 38 minutes, 40 seconds.
• To count from 1 to 21,271,840,720 would take you about one thousand, three hundred fifty-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 21271840720 cubic inches would be around 230.9 feet tall.

Recreational maths with 21271840720

• 21271840720 backwards is 02704817212
• The number of decimal digits it has is: 11
• The sum of 21271840720's digits is 34
• More coming soon!