28128437946

Names of 28128437946

• Cardinal: 28128437946 can be written as Twenty-eight billion, one hundred twenty-eight million, four hundred thirty-seven thousand, nine hundred forty-six.

Scientific notation

• Scientific notation: 2.8128437946 × 10¹⁰

Factors of 28128437946

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 951

Divisors of 28128437946

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 31 42 49 54 62 63 81 93 98 126 147 151 162 186 189 217 279 294 302 378 434 441 453 558 567 651 757 837 882 906 1057 1134 1302 1323 1359 1514 1519 1674 1953 2114 2271 2511 2646 2718 3038 3171 3906 3969 4077 4542 4557 4681 5022 5299 5859 6342 6813 7399 7938 8154 9114 9362 9513 10598 11718 12231 13626 13671 14043 14798 15897 17577 19026 20439 22197 23467 24462 27342 28086 28539 31794 32767 35154 37093 40878 41013 42129 44394 46934 47691 57078 61317 65534 66591 70401 74186 82026 84258 85617 95382 98301 111279 114307 122634 123039 126387 133182 140802 143073 164269 171234 196602 199773 211203 222558 228614 229369 246078 252774 286146 294903 328538 333837 342921 379161 399546 422406 429219 458738 492807 589806 599319 633609 667674 685842 688107 758322 800149 858438 884709 985614 1001511 1028763 1149883 1198638 1267218 1376214 1478421 1600298 1769418 1900827 2003022 2057526 2064321 2299766 2400447 2654127 2956842 3004533 3086289 3449649 3543517 3801654 4128642 4435263 4800894 5308254 5601043 6009066 6172578 6192963 6899298 7087034 7201341 8870526 9258867 10348947 10630551 11202086 12385926 13305789 14402682 16803129 18517734 18578889 20697894 21261102 21604023 24804619 26611578 31046841 31891653 33606258 37157778 43208046 49609238 50409387 62093682 63783306 64812069 74413857 93140523 95674959 100818774 129624138 148827714 151228161 173632333 186281046 191349918 223241571 287024877 302456322 347264666 446483142 453684483 520896999 574049754 669724713 907368966 1041793998 1339449426 1562690997 2009174139 3125381994 4018348278 4688072991 9376145982 14064218973 28128437946
• Sum of all divisors σ(n): 76285896192
• Sum of proper divisors (its aliquot sum) s(n): 48157458246
• 28128437946 is an abundant number, because the sum of its proper divisors (48157458246) is greater than itself. Its abundance is 20029020300

Bases of 28128437946

• Binary: 11010001100100101011110011010111010₂
• Hexadecimal: 0x68C95E6BA
• Base-36: CX6Y1MI

Squares and roots of 28128437946

• 28128437946 squared (28128437946²) is 791209021281972698916
• 28128437946 cubed (28128437946³) is 22255473857445362429924847466536
• The square root of 28128437946 is 167715.3479738811
• The cube root of 28128437946 is 3041.2249055203

Scales and comparisons

• 28,128,437,946 seconds is equal to 894 years, 20 weeks, 4 days, 14 hours, 59 minutes, 6 seconds.
• To count from 1 to 28,128,437,946 would take you about one thousand, seven hundred eighty-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 28128437946 cubic inches would be around 253.4 feet tall.

Recreational maths with 28128437946

• 28128437946 backwards is 64973482182
• 28128437946 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28128437946's digits is 54
• More coming soon!