12638875 has 8 divisors (see below), whose sum is σ = 15773472. Its totient is φ = 10111000.

The previous prime is 12638849. The next prime is 12638893. The reversal of 12638875 is 57883621.

12638875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12638875 - 2²¹ = 10541723 is a prime.

It is a super-2 number, since 2×12638875² = 319482322531250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50431 + ... + 50680.

It is an arithmetic number, because the mean of its divisors is an integer number (1971684).

Almost surely, 2^12638875 is an apocalyptic number.

12638875 is a deficient number, since it is larger than the sum of its proper divisors (3134597).

12638875 is an equidigital number, since it uses as much as digits as its factorization.

12638875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101126 (or 101116 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 12638875 is about 3555.1195479196. The cubic root of 12638875 is about 232.9357458194.

The spelling of 12638875 in words is "twelve million, six hundred thirty-eight thousand, eight hundred seventy-five".