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207080019720 = 23335727391537
BaseRepresentation
bin1100000011011011101…
…1100101011100001000
3201210111202120221201000
43000312323211130020
511343044441112340
6235044203255000
720650431060630
oct3006673453410
9653452527630
10207080019720
117a9052aa872
123417281a460
13166b2091462
14a04650b6c0
1555bece7d30
hex3036ee5708

207080019720 has 128 divisors (see below), whose sum is σ = 788876294400. Its totient is φ = 47332574208.

The previous prime is 207080019689. The next prime is 207080019739. The reversal of 207080019720 is 27910080702.

207080019720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13688209 + ... + 13703328.

It is an arithmetic number, because the mean of its divisors is an integer number (6163096050).

Almost surely, 2207080019720 is an apocalyptic number.

207080019720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207080019720 is an abundant number, since it is smaller than the sum of its proper divisors (581796274680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

207080019720 is a wasteful number, since it uses less digits than its factorization.

207080019720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27391564 (or 27391554 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The spelling of 207080019720 in words is "two hundred seven billion, eighty million, nineteen thousand, seven hundred twenty".

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 54 56 60 63 70 72 84 90 105 108 120 126 135 140 168 180 189 210 216 252 270 280 315 360 378 420 504 540 630 756 840 945 1080 1260 1512 1890 2520 3780 7560 27391537 54783074 82174611 109566148 136957685 164349222 191740759 219132296 246523833 273915370 328698444 383481518 410873055 493047666 547830740 575222277 657396888 739571499 766963036 821746110 958703795 986095332 1095661480 1150444554 1232619165 1479142998 1533926072 1643492220 1725666831 1917407590 1972190664 2300889108 2465238330 2876111385 2958285996 3286984440 3451333662 3697857495 3834815180 4601778216 4930476660 5177000493 5752222770 5916571992 6902667324 7395714990 7669630360 8628334155 9860953320 10354000986 11504445540 13805334648 14791429980 17256668310 20708001972 23008891080 25885002465 29582859960 34513336620 41416003944 51770004930 69026673240 103540009860 207080019720