21428414890

Names of 21428414890

• Cardinal: 21428414890 can be written as Twenty-one billion, four hundred twenty-eight million, four hundred fourteen thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 2.142841489 × 10¹⁰

Factors of 21428414890

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 234

Divisors of 21428414890

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 5 10 19 31 38 43 61 62 73 86 95 122 146 155 190 215 305 310 361 365 430 589 610 722 730 817 1159 1178 1333 1387 1634 1805 1891 2263 2318 2623 2666 2774 2945 3139 3610 3782 4085 4453 4526 5246 5795 5890 6278 6665 6935 8170 8906 9455 11191 11315 11590 13115 13330 13870 15523 15695 18910 22021 22265 22382 22630 25327 26230 26353 31046 31390 35929 42997 44042 44530 49837 50654 52706 55955 59641 71858 77615 81313 84607 85994 97309 99674 110105 111910 119282 126635 131765 138043 155230 162626 169214 179645 191479 194618 214985 220210 249185 253270 263530 276086 298205 359290 382958 406565 423035 429970 481213 486545 498370 596410 682651 690215 813130 816943 846070 946903 957395 962426 973090 1133179 1365302 1380430 1544947 1607533 1633886 1848871 1893806 1914790 2266358 2406065 2622817 3089894 3215066 3413255 3638101 3697742 4084715 4734515 4812130 5245634 5665895 5935849 6826510 7276202 7724735 8037665 8169430 9244355 9469030 11331790 11871698 13114085 15449470 16075330 18190505 18488710 26228170 29353993 29679245 35128549 36381010 49833523 58707986 59358490 69123919 70257098 99667046 112781131 138247838 146769965 175642745 225562262 249167615 293539930 345619595 351285490 498335230 563905655 691239190 1127811310 2142841489 4285682978 10714207445 21428414890
• Sum of all divisors σ(n): 44302021632
• Sum of proper divisors (its aliquot sum) s(n): 22873606742
• 21428414890 is an abundant number, because the sum of its proper divisors (22873606742) is greater than itself. Its abundance is 1445191852

Bases of 21428414890

• Binary: 10011111101001110111010100110101010₂
• Hexadecimal: 0x4FD3BA9AA
• Base-36: 9UDXAQY

Squares and roots of 21428414890

• 21428414890 squared (21428414890²) is 459176964697973712100
• 21428414890 cubed (21428414890³) is 9839434507479064245192213169000
• The square root of 21428414890 is 146384.4762602921
• The cube root of 21428414890 is 2777.5593579257

Scales and comparisons

• 21,428,414,890 seconds is equal to 681 years, 18 weeks, 4 days, 1 hour, 28 minutes, 10 seconds.
• To count from 1 to 21,428,414,890 would take you about one thousand, three hundred sixty-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 21428414890 cubic inches would be around 231.5 feet tall.

Recreational maths with 21428414890

• 21428414890 backwards is 09841482412
• 21428414890 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21428414890's digits is 43
• More coming soon!