21288498840

Names of 21288498840

• Cardinal: 21288498840 can be written as Twenty-one billion, two hundred eighty-eight million, four hundred ninety-eight thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.128849884 × 10¹⁰

Factors of 21288498840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 402294

Divisors of 21288498840

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 27 28 30 35 36 40 42 45 49 54 56 60 63 70 72 84 90 98 105 108 120 126 135 140 147 168 180 189 196 210 216 245 252 270 280 294 315 360 378 392 420 441 490 504 540 588 630 735 756 840 882 945 980 1080 1176 1260 1323 1470 1512 1764 1890 1960 2205 2520 2646 2940 3528 3780 4410 5292 5880 6615 7560 8820 10584 13230 17640 26460 52920 402277 804554 1206831 1609108 2011385 2413662 2815939 3218216 3620493 4022770 4827324 5631878 6034155 7240986 8045540 8447817 9654648 10861479 11263756 12068310 14079695 14481972 16091080 16895634 18102465 19711573 21722958 22527512 24136620 25343451 28159390 28963944 33791268 36204930 39423146 42239085 43445916 48273240 50686902 54307395 56318780 59134719 67582536 72409860 76030353 78846292 84478170 86891832 98557865 101373804 108614790 112637560 118269438 126717255 144819720 152060706 157692584 168956340 177404157 197115730 202747608 217229580 236538876 253434510 295673595 304121412 337912680 354808314 380151765 394231460 434459160 473077752 506869020 532212471 591347190 608242824 709616628 760303530 788462920 887020785 1013738040 1064424942 1182694380 1419233256 1520607060 1774041570 2128849884 2365388760 2661062355 3041214120 3548083140 4257699768 5322124710 7096166280 10644249420 21288498840
• Sum of all divisors σ(n): 82547445600
• Sum of proper divisors (its aliquot sum) s(n): 61258946760
• 21288498840 is an abundant number, because the sum of its proper divisors (61258946760) is greater than itself. Its abundance is 39970447920

Bases of 21288498840

• Binary: 10011110100111001001011011010011000₂
• Hexadecimal: 0x4F4E4B698
• Base-36: 9S2MEU0

Squares and roots of 21288498840

• 21288498840 squared (21288498840²) is 453200182860681345600
• 21288498840 cubed (21288498840³) is 9647951567117402707415239104000
• The square root of 21288498840 is 145905.7875479927
• The cube root of 21288498840 is 2771.5008283901

Scales and comparisons

• 21,288,498,840 seconds is equal to 676 years, 47 weeks, 1 day, 15 hours, 54 minutes.
• To count from 1 to 21,288,498,840 would take you about one thousand, three hundred fifty-three 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 21288498840 cubic inches would be around 231 feet tall.

Recreational maths with 21288498840

• 21288498840 backwards is 04889488212
• 21288498840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21288498840's digits is 54
• More coming soon!