21343891840

Names of 21343891840

• Cardinal: 21343891840 can be written as Twenty-one billion, three hundred forty-three million, eight hundred ninety-one thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.134389184 × 10¹⁰

Factors of 21343891840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 14848

Divisors of 21343891840

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 8 10 16 20 31 32 40 62 64 73 80 124 128 146 155 160 248 292 310 320 365 496 584 620 640 730 992 1168 1240 1460 1984 2263 2336 2480 2920 3968 4526 4672 4960 5840 9052 9344 9920 11315 11680 14737 18104 19840 22630 23360 29474 36208 45260 46720 58948 72416 73685 90520 117896 144832 147370 181040 235792 289664 294740 362080 456847 471584 589480 724160 913694 943168 1075801 1178960 1448320 1827388 1886336 2151602 2284235 2357920 3654776 4303204 4568470 4715840 5379005 7309552 8606408 9136940 9431680 10758010 14619104 17212816 18273880 21516020 29238208 33349831 34425632 36547760 43032040 58476416 66699662 68851264 73095520 86064080 133399324 137702528 146191040 166749155 172128160 266798648 292382080 333498310 344256320 533597296 666996620 688512640 1067194592 1333993240 2134389184 2667986480 4268778368 5335972960 10671945920 21343891840
• Sum of all divisors σ(n): 53396363520
• Sum of proper divisors (its aliquot sum) s(n): 32052471680
• 21343891840 is an abundant number, because the sum of its proper divisors (32052471680) is greater than itself. Its abundance is 10708579840

Bases of 21343891840

• Binary: 10011111000001100011111000110000000₂
• Hexadecimal: 0x4F831F180
• Base-36: 9SZLOCG

Squares and roots of 21343891840

• 21343891840 squared (21343891840²) is 455561718877618585600
• 21343891840 cubed (21343891840³) is 9723460054168377287820181504000
• The square root of 21343891840 is 146095.4887736099
• The cube root of 21343891840 is 2773.9025756649

Scales and comparisons

• 21,343,891,840 seconds is equal to 678 years, 34 weeks, 5 days, 18 hours, 50 minutes, 40 seconds.
• To count from 1 to 21,343,891,840 would take you about one thousand, three hundred fifty-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 21343891840 cubic inches would be around 231.2 feet tall.

Recreational maths with 21343891840

• 21343891840 backwards is 04819834312
• The number of decimal digits it has is: 11
• The sum of 21343891840's digits is 43
• More coming soon!