21397571874

Names of 21397571874

• Cardinal: 21397571874 can be written as Twenty-one billion, three hundred ninety-seven million, five hundred seventy-one thousand, eight hundred seventy-four.

Scientific notation

• Scientific notation: 2.1397571874 × 10¹⁰

Factors of 21397571874

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 362

Divisors of 21397571874

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 29 31 42 54 58 62 63 81 87 93 126 139 151 162 174 186 189 203 217 261 278 279 302 378 406 417 434 453 522 558 567 609 651 783 834 837 899 906 973 1057 1134 1218 1251 1302 1359 1566 1674 1798 1827 1946 1953 2114 2349 2502 2511 2697 2718 2919 3171 3654 3753 3906 4031 4077 4309 4379 4681 4698 5022 5394 5481 5838 5859 6293 6342 7506 8062 8091 8154 8618 8757 8758 9362 9513 10962 11259 11718 12093 12231 12586 12927 13137 14043 16182 16443 17514 17577 18879 19026 20989 22518 24186 24273 24462 25854 26271 26274 28086 28217 28539 30163 30653 32767 32886 35154 36279 37758 38781 39411 41978 42129 48546 52542 56434 56637 57078 60326 61306 62967 65534 72558 72819 77562 78813 78822 84258 84651 85617 90489 91959 98301 108837 113274 116343 118233 124961 125934 126387 135749 145638 146923 157626 169302 169911 171234 180978 183918 188901 196602 217674 232686 236466 249922 252774 253953 271467 271498 275877 293846 294903 326511 339822 349029 354699 374883 377802 379161 407247 440769 507906 509733 542934 551754 566703 589806 608681 650659 653022 698058 709398 749766 758322 761859 814401 814494 827631 874727 881538 884709 950243 1019466 1124649 1133406 1217362 1221741 1301318 1322307 1523718 1628802 1655262 1700109 1749454 1769418 1826043 1900486 1951977 2249298 2285577 2443203 2443482 2482893 2624181 2644614 2654127 2850729 3373947 3400218 3652086 3665223 3903954 3966921 4260767 4554613 4571154 4886406 4965786 5248362 5308254 5478129 5701458 5855931 6747894 7330446 7872543 7933842 8521534 8552187 9109226 10121841 10956258 10995669 11711862 11900763 12782301 13663839 15745086 16434387 17104374 17567793 18869111 20243682 21991338 23617629 23801526 25564602 25656561 27327678 32868774 35135586 37738222 38346903 40991517 47235258 49303161 51313122 52703379 56607333 70852887 76693806 76969683 81983034 98606322 105406758 113214666 115040709 122974551 132083777 141705774 153939366 169821999 230081418 245949102 264167554 339643998 345122127 368923653 396251331 509465997 690244254 737847306 792502662 1018931994 1188753993 1528397991 2377507986 3056795982 3566261979 7132523958 10698785937 21397571874
• Sum of all divisors σ(n): 59325235200
• Sum of proper divisors (its aliquot sum) s(n): 37927663326
• 21397571874 is an abundant number, because the sum of its proper divisors (37927663326) is greater than itself. Its abundance is 16530091452

Bases of 21397571874

• Binary: 10011111011011001010000100100100010₂
• Hexadecimal: 0x4FB650922
• Base-36: 9TVK84I

Squares and roots of 21397571874

• 21397571874 squared (21397571874²) is 457856082102995871876
• 21397571874 cubed (21397571874³) is 9797008424746899239192005215624
• The square root of 21397571874 is 146279.0889840377
• The cube root of 21397571874 is 2776.2260901859

Scales and comparisons

• 21,397,571,874 seconds is equal to 680 years, 19 weeks, 4 days, 1 hour, 57 minutes, 54 seconds.
• To count from 1 to 21,397,571,874 would take you about one thousand, three hundred sixty 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 21397571874 cubic inches would be around 231.4 feet tall.

Recreational maths with 21397571874

• 21397571874 backwards is 47817579312
• 21397571874 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21397571874's digits is 54
• More coming soon!