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23507251020 = 223251131382979
BaseRepresentation
bin10101111001001001…
…000010111101001100
32020200021001002011200
4111321021002331030
5341120324013040
614444333545500
71461350223351
oct257111027514
966607032150
1023507251020
119a73259690
124680645290
1322a81b27b6
1411d0010628
15928b0b630
hex579242f4c

23507251020 has 144 divisors (see below), whose sum is σ = 80297118720. Its totient is φ = 5514883200.

The previous prime is 23507250971. The next prime is 23507251021. The reversal of 23507251020 is 2015270532.

It is not an unprimeable number, because it can be changed into a prime (23507251021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130110 + ... + 252869.

It is an arithmetic number, because the mean of its divisors is an integer number (557618880).

Almost surely, 223507251020 is an apocalyptic number.

23507251020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23507251020 is an abundant number, since it is smaller than the sum of its proper divisors (56789867700).

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

23507251020 is a wasteful number, since it uses less digits than its factorization.

23507251020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383036 (or 383031 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The spelling of 23507251020 in words is "twenty-three billion, five hundred seven million, two hundred fifty-one thousand, twenty".

Divisors: 1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 31 33 36 44 45 55 60 62 66 90 93 99 110 124 132 155 165 180 186 198 220 279 310 330 341 372 396 465 495 558 620 660 682 930 990 1023 1116 1364 1395 1705 1860 1980 2046 2790 3069 3410 4092 5115 5580 6138 6820 10230 12276 15345 20460 30690 61380 382979 765958 1148937 1531916 1914895 2297874 3446811 3829790 4212769 4595748 5744685 6893622 7659580 8425538 11489370 11872349 12638307 13787244 16851076 17234055 21063845 22978740 23744698 25276614 34468110 35617047 37914921 42127690 47489396 50553228 59361745 63191535 68936220 71234094 75829842 84255380 106851141 118723490 126383070 130595839 142468188 151659684 178085235 189574605 213702282 237446980 252766140 261191678 356170470 379149210 391787517 427404564 522383356 534255705 652979195 712340940 758298420 783575034 1068511410 1175362551 1305958390 1567150068 1958937585 2137022820 2350725102 2611916780 3917875170 4701450204 5876812755 7835750340 11753625510 23507251020