21427884828

Names of 21427884828

• Cardinal: 21427884828 can be written as Twenty-one billion, four hundred twenty-seven million, eight hundred eighty-four thousand, eight hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1427884828 × 10¹⁰

Factors of 21427884828

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 908

Divisors of 21427884828

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 19 21 27 28 36 38 42 49 54 57 63 76 81 84 98 108 114 126 133 147 162 171 189 196 228 243 252 266 294 324 342 378 399 441 486 513 532 567 588 684 729 756 798 877 882 931 972 1026 1134 1197 1323 1458 1539 1596 1701 1754 1764 1862 2052 2187 2268 2394 2631 2646 2793 2916 3078 3402 3508 3591 3724 3969 4374 4617 4788 5103 5262 5292 5586 6139 6156 6561 6804 7182 7893 7938 8379 8748 9234 10206 10524 10773 11172 11907 12278 13122 13851 14364 15309 15786 15876 16663 16758 18417 18468 20412 21546 23679 23814 24556 25137 26244 27702 30618 31572 32319 33326 33516 35721 36834 41553 42973 43092 45927 47358 47628 49989 50274 55251 55404 61236 64638 66652 71037 71442 73668 75411 83106 85946 91854 94716 96957 99978 100548 107163 110502 116641 124659 128919 129276 142074 142884 149967 150822 165753 166212 171892 183708 193914 199956 213111 214326 221004 226233 233282 249318 257838 284148 290871 299934 301644 321489 331506 349923 386757 387828 426222 428652 449901 452466 466564 497259 498636 515676 581742 599868 639333 642978 663012 678699 699846 773514 816487 852444 872613 899802 904932 994518 1049769 1160271 1163484 1278666 1285956 1349703 1357398 1399692 1491777 1547028 1632974 1745226 1799604 1917999 1989036 2036097 2099538 2320542 2449461 2557332 2699406 2714796 2983554 3149307 3265948 3480813 3490452 3835998 4049109 4072194 4199076 4475331 4641084 4898922 5398812 5753997 5967108 6108291 6298614 6961626 7348383 7671996 8098218 8144388 8950662 9447921 9797844 10442439 11507994 12147327 12216582 12597228 13425993 13923252 14696766 16196436 17901324 18895842 20884878 22045149 23015988 24294654 24433164 26851986 28343763 29393532 31327317 36441981 37791684 40277979 41769756 44090298 48589308 53703972 56687526 62654634 66135447 72883962 80555958 85031289 88180596 93981951 109325943 113375052 125309268 132270894 145767924 161111916 170062578 187963902 198406341 218651886 255093867 264541788 281945853 340125156 375927804 396812682 437303772 510187734 563891706 595219023 765281601 793625364 1020375468 1127783412 1190438046 1530563202 1785657069 2380876092 3061126404 3571314138 5356971207 7142628276 10713942414 21427884828
• Sum of all divisors σ(n): 68950376040
• Sum of proper divisors (its aliquot sum) s(n): 47522491212
• 21427884828 is an abundant number, because the sum of its proper divisors (47522491212) is greater than itself. Its abundance is 26094606384

Bases of 21427884828

• Binary: 10011111101001100111001001100011100₂
• Hexadecimal: 0x4FD33931C
• Base-36: 9UDLXR0

Squares and roots of 21427884828

• 21427884828 squared (21427884828²) is 459154248202032589584
• 21427884828 cubed (21427884828³) is 9838704348760080405108544431552
• The square root of 21427884828 is 146382.6657360767
• The cube root of 21427884828 is 2777.5364554569

Scales and comparisons

• 21,427,884,828 seconds is equal to 681 years, 17 weeks, 4 days, 22 hours, 13 minutes, 48 seconds.
• To count from 1 to 21,427,884,828 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 21427884828 cubic inches would be around 231.5 feet tall.

Recreational maths with 21427884828

• 21427884828 backwards is 82848872412
• 21427884828 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21427884828's digits is 54
• More coming soon!