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12805873422 = 2319112332223
BaseRepresentation
bin10111110110100101…
…00001111100001110
31020001110111202212020
423323102201330032
5202211300422142
65514414151010
7632225061636
oct137322417416
936043452766
1012805873422
115481644271
1225947b2466
1312910c2bc4
14896a756c6
154ee3a7cec
hex2fb4a1f0e

12805873422 has 16 divisors (see below), whose sum is σ = 26959733760. Its totient is φ = 4043959992.

The previous prime is 12805873417. The next prime is 12805873433. The reversal of 12805873422 is 22437850821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56165998 + ... + 56166225.

It is an arithmetic number, because the mean of its divisors is an integer number (1684983360).

Almost surely, 212805873422 is an apocalyptic number.

12805873422 is an abundant number, since it is smaller than the sum of its proper divisors (14153860338).

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

12805873422 is a wasteful number, since it uses less digits than its factorization.

12805873422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112332247.

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 12805873422 in words is "twelve billion, eight hundred five million, eight hundred seventy-three thousand, four hundred twenty-two".

Divisors: 1 2 3 6 19 38 57 114 112332223 224664446 336996669 673993338 2134312237 4268624474 6402936711 12805873422