21538168872372

Names of 21538168872372

• Cardinal: 21538168872372 can be written as Twenty-one trillion, five hundred thirty-eight billion, one hundred sixty-eight million, eight hundred seventy-two thousand, three hundred seventy-two.

Scientific notation

• Scientific notation: 2.1538168872372 × 10¹³

Factors of 21538168872372

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 181

Divisors of 21538168872372

• Number of divisors d(n): 294
• Complete list of divisors:
  1 2 3 4 6 9 12 18 19 27 36 38 54 57 76 81 108 114 157 162 171 228 243 314 324 342 361 471 486 513 628 684 722 729 942 972 1026 1083 1413 1444 1458 1539 1884 2052 2166 2826 2916 2983 3078 3249 4239 4332 4617 5652 5966 6156 6498 6859 8478 8949 9234 9747 11932 12717 12996 13718 13851 16956 17898 18468 19494 20577 25434 26847 27436 27702 29241 35796 38151 38988 41154 50868 53694 55404 56677 58482 61731 76302 80541 82308 87723 107388 113354 114453 116964 123462 130321 152604 161082 170031 175446 185193 226708 228906 241623 246924 260642 263169 322164 340062 350892 370386 390963 457812 483246 510093 521284 526338 555579 680124 724869 740772 781926 966492 1020186 1052676 1076863 1111158 1172889 1449738 1530279 1563852 1666737 2040372 2153726 2174607 2222316 2345778 2476099 2899476 3060558 3230589 3333474 3518667 4307452 4349214 4590837 4691556 4952198 5000211 6121116 6461178 6666948 7037334 7428297 8698428 9181674 9691767 9904396 10000422 10556001 12922356 13772511 14074668 14856594 18363348 19383534 20000844 20460397 21112002 22284891 27545022 29075301 29713188 31668003 38767068 40920794 41317533 42224004 44569782 47045881 55090044 58150602 61381191 63336006 66854673 81841588 82635066 87225903 89139564 94091762 95004009 116301204 122762382 126672012 133709346 141137643 165270132 174451806 184143573 188183524 190008018 200564019 245524764 261677709 267418692 282275286 348903612 368287146 380016036 388747543 401128038 423412929 523355418 552430719 564550572 601692057 736574292 777495086 785033127 802256076 846825858 1046710836 1104861438 1166242629 1203384114 1270238787 1554990172 1570066254 1657292157 1693651716 1805076171 2209722876 2332485258 2406768228 2540477574 3140132508 3314584314 3498727887 3610152342 3810716361 4664970516 4971876471 5080955148 6629168628 6997455774 7220304684 7386203317 7621432722 9943752942 10496183661 11432149083 13994911548 14772406634 14915629413 15242865444 19887505884 20992367322 22158609951 22864298166 29544813268 29831258826 31488550983 34296447249 41984734644 44317219902 45728596332 59662517652 62977101966 66475829853 68592894498 88634439804 94465652949 125954203932 132951659706 137185788996 188931305898 199427489559 265903319412 283396958847 377862611796 398854979118 566793917694 598282468677 797709958236 1133587835388 1196564937354 1794847406031 2393129874708 3589694812062 5384542218093 7179389624124 10769084436186 21538168872372
• Sum of all divisors σ(n): 60031333414178
• Sum of proper divisors (its aliquot sum) s(n): 38493164541806
• 21538168872372 is an abundant number, because the sum of its proper divisors (38493164541806) is greater than itself. Its abundance is 16954995669434

Bases of 21538168872372

• Binary: 100111001011010111110111001111001110110110100₂
• Hexadecimal: 0x1396BEE79DB4
• Base-36: 7MUHXNB90

Squares and roots of 21538168872372

• 21538168872372 squared (21538168872372²) is 463892718374814150024906384
• 21538168872372 cubed (21538168872372³) is 9991399707020452646087007568392144022848
• The square root of 21538168872372 is 4640923.2780096675
• The cube root of 21538168872372 is 27822.9340244875

Scales and comparisons

• 21,538,168,872,372 seconds is equal to 684,847 years, 7 weeks, 4 days, 22 hours, 46 minutes, 12 seconds.
• To count from 1 to 21,538,168,872,372 would take you about one million, seven hundred twelve thousand, one hundred seventeen 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 21538168872372 cubic inches would be around 2318.6 feet tall.

Recreational maths with 21538168872372

• 21538168872372 backwards is 27327886183512
• The number of decimal digits it has is: 14
• The sum of 21538168872372's digits is 63
• More coming soon!