1997649920

Names of 1997649920

• Cardinal: 1997649920 can be written as One billion, nine hundred ninety-seven million, six hundred forty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.99764992 × 10⁹

Factors of 1997649920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 74

Divisors of 1997649920

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 29 31 32 35 40 56 58 62 64 70 80 112 116 124 128 140 145 155 160 203 217 224 232 248 256 280 290 310 320 406 434 448 464 496 512 560 580 620 640 812 868 896 899 928 961 992 1015 1024 1085 1120 1160 1240 1280 1624 1736 1792 1798 1856 1922 1984 2030 2048 2170 2240 2320 2480 2560 3248 3472 3584 3596 3712 3844 3968 4060 4340 4480 4495 4640 4805 4960 5120 6293 6496 6727 6944 7168 7192 7424 7688 7936 8120 8680 8960 8990 9280 9610 9920 10240 12586 12992 13454 13888 14336 14384 14848 15376 15872 16240 17360 17920 17980 18560 19220 19840 25172 25984 26908 27776 27869 28768 29696 30752 31465 31744 32480 33635 34720 35840 35960 37120 38440 39680 50344 51968 53816 55552 55738 57536 59392 61504 62930 63488 64960 67270 69440 71680 71920 74240 76880 79360 100688 103936 107632 111104 111476 115072 123008 125860 129920 134540 138880 139345 143840 148480 153760 158720 195083 201376 207872 215264 222208 222952 230144 246016 251720 259840 269080 277760 278690 287680 296960 307520 317440 390166 402752 415744 430528 444416 445904 460288 492032 503440 519680 538160 555520 557380 575360 615040 780332 805504 861056 891808 920576 975415 984064 1006880 1039360 1076320 1111040 1114760 1150720 1230080 1560664 1611008 1722112 1783616 1841152 1950830 1968128 2013760 2078720 2152640 2222080 2229520 2301440 2460160 3121328 3222016 3444224 3567232 3901660 4027520 4305280 4459040 4602880 4920320 6242656 6444032 6888448 7134464 7803320 8055040 8610560 8918080 9205760 9840640 12485312 12888064 13776896 14268928 15606640 16110080 17221120 17836160 24970624 28537856 31213280 32220160 34442240 35672320 49941248 57075712 62426560 64440320 68884480 71344640 99882496 124853120 142689280 199764992 249706240 285378560 399529984 499412480 998824960 1997649920
• Sum of all divisors σ(n): 5855522400
• Sum of proper divisors (its aliquot sum) s(n): 3857872480
• 1997649920 is an abundant number, because the sum of its proper divisors (3857872480) is greater than itself. Its abundance is 1860222560

Bases of 1997649920

• Binary: 1110111000100011011100000000000₂
• Hexadecimal: 0x7711B800
• Base-36: X1CKJK

Squares and roots of 1997649920

• 1997649920 squared (1997649920²) is 3990605202876006400
• 1997649920 cubed (1997649920³) is 7971832164276837954879488000
• The square root of 1997649920 is 44695.0771338411
• The cube root of 1997649920 is 1259.4273706033

Scales and comparisons

• 1,997,649,920 seconds is equal to 63 years, 26 weeks, 6 days, 22 hours, 45 minutes, 20 seconds.
• To count from 1 to 1,997,649,920 would take you about one hundred twenty-seven 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 1997649920 cubic inches would be around 105 feet tall.

Recreational maths with 1997649920

• 1997649920 backwards is 0299467991
• 1997649920 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1997649920's digits is 56
• More coming soon!