21355849242

Names of 21355849242

• Cardinal: 21355849242 can be written as Twenty-one billion, three hundred fifty-five million, eight hundred forty-nine thousand, two hundred forty-two.

Scientific notation

• Scientific notation: 2.1355849242 × 10¹⁰

Factors of 21355849242

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 373

Divisors of 21355849242

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 6 7 9 13 14 17 18 21 26 34 39 42 49 51 63 78 91 98 102 117 119 126 147 153 182 221 234 238 273 294 306 331 357 441 442 546 637 662 663 714 819 833 882 993 1071 1274 1326 1547 1638 1666 1911 1986 1989 2142 2317 2499 2979 3094 3822 3978 4303 4634 4641 4998 5627 5733 5958 6951 7497 8606 9282 10829 11254 11466 12909 13902 13923 14994 16219 16881 20853 21658 25818 27846 30121 32438 32487 33762 38727 39389 41706 48657 50643 60242 64974 73151 77454 78778 90363 97314 97461 101286 109561 118167 145971 146302 180726 194922 210847 219122 219453 236334 271089 275723 291942 328683 354501 421694 438906 512057 542178 551446 632541 657366 658359 709002 766927 827169 986049 1024114 1265082 1316718 1424293 1533854 1536171 1654338 1862537 1897623 1972098 2300781 2481507 2848586 3072342 3584399 3725074 3795246 4272879 4601562 4608513 4963014 5368489 5587611 6902343 7168798 8545758 9217026 9970051 10736978 10753197 11175222 12818637 13037759 13804686 16105467 16762833 19940102 21506394 24212981 25637274 26075518 29910153 32210934 32259591 33525666 39113277 48316401 48425962 59820306 64519182 69790357 72638943 78226554 89730459 91264313 96632802 117339831 139580714 145277886 169490867 179460918 182528626 209371071 217916829 234679662 273792939 338981734 418742142 435833658 508472601 547585878 628113213 821378817 1016945202 1186436069 1256226426 1525417803 1642757634 2372872138 3050835606 3559308207 7118616414 10677924621 21355849242
• Sum of all divisors σ(n): 61561619028
• Sum of proper divisors (its aliquot sum) s(n): 40205769786
• 21355849242 is an abundant number, because the sum of its proper divisors (40205769786) is greater than itself. Its abundance is 18849920544

Bases of 21355849242

• Binary: 10011111000111010000110011000011010₂
• Hexadecimal: 0x4F8E8661A
• Base-36: 9T6PYQI

Squares and roots of 21355849242

• 21355849242 squared (21355849242²) is 456072296847031974564
• 21355849242 cubed (21355849242³) is 9739811214917886783942362680488
• The square root of 21355849242 is 146136.4062853605
• The cube root of 21355849242 is 2774.4204830271

Scales and comparisons

• 21,355,849,242 seconds is equal to 679 years, 2 weeks, 4 days, 4 hours, 20 minutes, 42 seconds.
• To count from 1 to 21,355,849,242 would take you about one thousand, three hundred fifty-eight 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 21355849242 cubic inches would be around 231.2 feet tall.

Recreational maths with 21355849242

• 21355849242 backwards is 24294855312
• The number of decimal digits it has is: 11
• The sum of 21355849242's digits is 45
• More coming soon!