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12765025140 = 22357131232007
BaseRepresentation
bin10111110001101101…
…01101001101110100
31012221121122110112220
423320312231031310
5202120321301030
65510354442340
7631220631510
oct137066551564
935847573486
1012765025140
11546058435a
122582b933b0
1312857c021a
14891481140
154ea9d9a10
hex2f8dad374

12765025140 has 96 divisors (see below), whose sum is σ = 41160075264. Its totient is φ = 2895434880.

The previous prime is 12765025081. The next prime is 12765025159. The reversal of 12765025140 is 4152056721.

It is a congruent number.

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, 60984 + ... + 171023.

It is an arithmetic number, because the mean of its divisors is an integer number (428750784).

Almost surely, 212765025140 is an apocalyptic number.

12765025140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12765025140 is an abundant number, since it is smaller than the sum of its proper divisors (28395050124).

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

12765025140 is a wasteful number, since it uses less digits than its factorization.

12765025140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232157 (or 232155 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 12765025140 in words is "twelve billion, seven hundred sixty-five million, twenty-five thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 131 140 210 262 393 420 524 655 786 917 1310 1572 1834 1965 2620 2751 3668 3930 4585 5502 7860 9170 11004 13755 18340 27510 55020 232007 464014 696021 928028 1160035 1392042 1624049 2320070 2784084 3248098 3480105 4640140 4872147 6496196 6960210 8120245 9744294 13920420 16240490 19488588 24360735 30392917 32480980 48721470 60785834 91178751 97442940 121571668 151964585 182357502 212750419 303929170 364715004 425500838 455893755 607858340 638251257 851001676 911787510 1063752095 1276502514 1823575020 2127504190 2553005028 3191256285 4255008380 6382512570 12765025140