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12875871 = 317324809
BaseRepresentation
bin110001000111…
…100001011111
3220020011101010
4301013201133
511244011441
61135550303
7214304661
oct61074137
926204333
1012875871
1172a4918
12438b393
13288a878
1419d2531
1511e5116
hexc4785f

12875871 has 8 divisors (see below), whose sum is σ = 17267760. Its totient is φ = 8533952.

The previous prime is 12875869. The next prime is 12875879. The reversal of 12875871 is 17857821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12875871 - 21 = 12875869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12875879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11886 + ... + 12923.

It is an arithmetic number, because the mean of its divisors is an integer number (2158470).

Almost surely, 212875871 is an apocalyptic number.

12875871 is a deficient number, since it is larger than the sum of its proper divisors (4391889).

12875871 is a wasteful number, since it uses less digits than its factorization.

12875871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24985.

The product of its digits is 31360, while the sum is 39.

The square root of 12875871 is about 3588.2963924403. The cubic root of 12875871 is about 234.3826925120.

The spelling of 12875871 in words is "twelve million, eight hundred seventy-five thousand, eight hundred seventy-one".

Divisors: 1 3 173 519 24809 74427 4291957 12875871