21997191168

Names of 21997191168

• Cardinal: 21997191168 can be written as Twenty-one billion, nine hundred ninety-seven million, one hundred ninety-one thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1997191168 × 10¹⁰

Factors of 21997191168

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 75

Divisors of 21997191168

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 27 32 36 46 47 48 54 64 69 72 92 94 96 108 128 138 141 144 184 188 192 207 216 256 276 282 288 368 376 384 414 423 432 512 529 552 564 576 621 736 752 768 828 846 864 1024 1058 1081 1104 1128 1152 1242 1269 1472 1504 1536 1587 1656 1692 1728 2048 2116 2162 2208 2256 2304 2484 2538 2944 3008 3072 3174 3243 3312 3384 3456 4096 4232 4324 4416 4512 4608 4761 4968 5076 5888 6016 6144 6348 6486 6624 6768 6912 8192 8464 8648 8832 9024 9216 9522 9729 9936 10152 11776 12032 12288 12696 12972 13248 13536 13824 14283 16384 16928 17296 17664 18048 18432 19044 19458 19872 20304 23552 24064 24576 24863 25392 25944 26496 27072 27648 28566 29187 32768 33856 34592 35328 36096 36864 38088 38916 39744 40608 47104 48128 49152 49726 50784 51888 52992 54144 55296 57132 58374 67712 69184 70656 72192 73728 74589 76176 77832 79488 81216 94208 96256 98304 99452 101568 103776 105984 108288 110592 114264 116748 135424 138368 141312 144384 147456 149178 152352 155664 158976 162432 188416 192512 198904 203136 207552 211968 216576 221184 223767 228528 233496 270848 276736 282624 288768 294912 298356 304704 311328 317952 324864 376832 385024 397808 406272 415104 423936 433152 442368 447534 457056 466992 541696 553472 565248 577536 596712 609408 622656 635904 649728 671301 753664 770048 795616 812544 830208 847872 866304 884736 895068 914112 933984 1083392 1106944 1130496 1155072 1193424 1218816 1245312 1271808 1299456 1342602 1540096 1591232 1625088 1660416 1695744 1732608 1790136 1828224 1867968 2166784 2213888 2260992 2310144 2386848 2437632 2490624 2543616 2598912 2685204 3182464 3250176 3320832 3391488 3465216 3580272 3656448 3735936 4333568 4427776 4620288 4773696 4875264 4981248 5087232 5197824 5370408 6364928 6500352 6641664 6782976 6930432 7160544 7312896 7471872 8667136 8855552 9547392 9750528 9962496 10174464 10395648 10740816 12729856 13000704 13283328 13860864 14321088 14625792 14943744 17334272 17711104 19094784 19501056 19924992 20348928 20791296 21481632 25459712 26001408 26566656 28642176 29251584 29887488 35422208 38189568 39002112 39849984 41582592 42963264 50919424 52002816 53133312 57284352 58503168 59774976 76379136 78004224 79699968 85926528 101838848 106266624 114568704 117006336 119549952 152758272 156008448 159399936 171853056 203677696 229137408 234012672 239099904 305516544 318799872 343706112 407355392 458274816 468025344 478199808 611033088 687412224 814710784 916549632 956399616 1222066176 1374824448 1833099264 2444132352 2749648896 3666198528 5499297792 7332397056 10998595584 21997191168
• Sum of all divisors σ(n): 69582441600
• Sum of proper divisors (its aliquot sum) s(n): 47585250432
• 21997191168 is an abundant number, because the sum of its proper divisors (47585250432) is greater than itself. Its abundance is 25588059264

Bases of 21997191168

• Binary: 10100011111001000101000000000000000₂
• Hexadecimal: 0x51F228000
• Base-36: A3SK5C0

Squares and roots of 21997191168

• 21997191168 squared (21997191168²) is 483876419281537204224
• 21997191168 cubed (21997191168³) is 10643922096623295094219585093632
• The square root of 21997191168 is 148314.5008689305
• The cube root of 21997191168 is 2801.9200762203

Scales and comparisons

• 21,997,191,168 seconds is equal to 699 years, 23 weeks, 2 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,997,191,168 would take you about one thousand, three hundred ninety-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 21997191168 cubic inches would be around 233.5 feet tall.

Recreational maths with 21997191168

• 21997191168 backwards is 86119179912
• 21997191168 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21997191168's digits is 54
• More coming soon!