21439774720

Names of 21439774720

• Cardinal: 21439774720 can be written as Twenty-one billion, four hundred thirty-nine million, seven hundred seventy-four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.143977472 × 10¹⁰

Factors of 21439774720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 20
• Sum of prime factors: 746

Divisors of 21439774720

• Number of divisors d(n): 272
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 32 35 40 52 56 64 65 70 80 91 104 112 128 130 140 160 182 208 224 256 260 280 320 364 416 448 455 512 520 560 640 719 728 832 896 910 1024 1040 1120 1280 1438 1456 1664 1792 1820 2048 2080 2240 2560 2876 2912 3328 3584 3595 3640 4096 4160 4480 5033 5120 5752 5824 6656 7168 7190 7280 8192 8320 8960 9347 10066 10240 11504 11648 13312 14336 14380 14560 16384 16640 17920 18694 20132 20480 23008 23296 25165 26624 28672 28760 29120 32768 33280 35840 37388 40264 40960 46016 46592 46735 50330 53248 57344 57520 58240 65429 65536 66560 71680 74776 80528 81920 92032 93184 93470 100660 106496 114688 115040 116480 130858 133120 143360 149552 161056 163840 184064 186368 186940 201320 212992 229376 230080 232960 261716 266240 286720 299104 322112 327145 327680 368128 372736 373880 402640 425984 458752 460160 465920 523432 532480 573440 598208 644224 654290 736256 745472 747760 805280 851968 920320 931840 1046864 1064960 1146880 1196416 1288448 1308580 1472512 1490944 1495520 1610560 1840640 1863680 2093728 2129920 2293760 2392832 2576896 2617160 2945024 2981888 2991040 3221120 3681280 3727360 4187456 4259840 4785664 5153792 5234320 5890048 5963776 5982080 6442240 7362560 7454720 8374912 9571328 10307584 10468640 11780096 11964160 12884480 14725120 14909440 16749824 19142656 20615168 20937280 23560192 23928320 25768960 29450240 29818880 33499648 38285312 41230336 41874560 47120384 47856640 51537920 58900480 66999296 76570624 82460672 83749120 95713280 103075840 117800960 133998592 153141248 164921344 167498240 191426560 206151680 235601920 267997184 306282496 329842688 334996480 382853120 412303360 535994368 612564992 669992960 765706240 824606720 1071988736 1339985920 1531412480 1649213440 2143977472 2679971840 3062824960 4287954944 5359943680 10719887360 21439774720
• Sum of all divisors σ(n): 63417392640
• Sum of proper divisors (its aliquot sum) s(n): 41977617920
• 21439774720 is an abundant number, because the sum of its proper divisors (41977617920) is greater than itself. Its abundance is 20537843200

Bases of 21439774720

• Binary: 10011111101111010010000000000000000₂
• Hexadecimal: 0x4FDE90000
• Base-36: 9UKOS1S

Squares and roots of 21439774720

• 21439774720 squared (21439774720²) is 459663940044351078400
• 21439774720 cubed (21439774720³) is 9855091321458473929485058048000
• The square root of 21439774720 is 146423.2724671867
• The cube root of 21439774720 is 2778.0500930589

Scales and comparisons

• 21,439,774,720 seconds is equal to 681 years, 37 weeks, 2 days, 12 hours, 58 minutes, 40 seconds.
• To count from 1 to 21,439,774,720 would take you about one thousand, three hundred sixty-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 21439774720 cubic inches would be around 231.5 feet tall.

Recreational maths with 21439774720

• 21439774720 backwards is 02747793412
• The number of decimal digits it has is: 11
• The sum of 21439774720's digits is 46
• More coming soon!