21162557440

Names of 21162557440

• Cardinal: 21162557440 can be written as Twenty-one billion, one hundred sixty-two million, five hundred fifty-seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.116255744 × 10¹⁰

Factors of 21162557440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 20
• Sum of prime factors: 184

Divisors of 21162557440

• Number of divisors d(n): 272
• Complete list of divisors:
  1 2 4 5 8 10 16 17 20 29 32 34 40 58 64 68 80 85 116 128 131 136 145 160 170 232 256 262 272 290 320 340 464 493 512 524 544 580 640 655 680 928 986 1024 1048 1088 1160 1280 1310 1360 1856 1972 2048 2096 2176 2227 2320 2465 2560 2620 2720 3712 3799 3944 4096 4192 4352 4454 4640 4930 5120 5240 5440 7424 7598 7888 8192 8384 8704 8908 9280 9860 10240 10480 10880 11135 14848 15196 15776 16384 16768 17408 17816 18560 18995 19720 20480 20960 21760 22270 29696 30392 31552 32768 33536 34816 35632 37120 37990 39440 40960 41920 43520 44540 59392 60784 63104 64583 65536 67072 69632 71264 74240 75980 78880 81920 83840 87040 89080 118784 121568 126208 129166 134144 139264 142528 148480 151960 157760 163840 167680 174080 178160 237568 243136 252416 258332 268288 278528 285056 296960 303920 315520 322915 327680 335360 348160 356320 475136 486272 504832 516664 536576 557056 570112 593920 607840 631040 645830 670720 696320 712640 950272 972544 1009664 1033328 1073152 1114112 1140224 1187840 1215680 1262080 1291660 1341440 1392640 1425280 1900544 1945088 2019328 2066656 2146304 2280448 2375680 2431360 2524160 2583320 2682880 2785280 2850560 3890176 4038656 4133312 4292608 4560896 4751360 4862720 5048320 5166640 5365760 5570560 5701120 7780352 8077312 8266624 8585216 9121792 9502720 9725440 10096640 10333280 10731520 11402240 15560704 16154624 16533248 18243584 19450880 20193280 20666560 21463040 22804480 31121408 32309248 33066496 36487168 38901760 40386560 41333120 42926080 45608960 62242816 66132992 72974336 77803520 80773120 82666240 91217920 124485632 132265984 145948672 155607040 161546240 165332480 182435840 248971264 264531968 311214080 330664960 364871680 529063936 622428160 661329920 729743360 1058127872 1244856320 1322659840 2116255744 2645319680 4232511488 5290639360 10581278720 21162557440
• Sum of all divisors σ(n): 56056445280
• Sum of proper divisors (its aliquot sum) s(n): 34893887840
• 21162557440 is an abundant number, because the sum of its proper divisors (34893887840) is greater than itself. Its abundance is 13731330400

Bases of 21162557440

• Binary: 10011101101011000110000000000000000₂
• Hexadecimal: 0x4ED630000
• Base-36: 9PZN1TS

Squares and roots of 21162557440

• 21162557440 squared (21162557440²) is 447853837401299353600
• 21162557440 cubed (21162557440³) is 9477732558729417901194870784000
• The square root of 21162557440 is 145473.5626840835
• The cube root of 21162557440 is 2766.0246746399

Scales and comparisons

• 21,162,557,440 seconds is equal to 672 years, 47 weeks, 10 minutes, 40 seconds.
• To count from 1 to 21,162,557,440 would take you about one thousand, three hundred forty-five 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 21162557440 cubic inches would be around 230.5 feet tall.

Recreational maths with 21162557440

• 21162557440 backwards is 04475526112
• The number of decimal digits it has is: 11
• The sum of 21162557440's digits is 37
• More coming soon!