12638910 has 32 divisors (see below), whose sum is σ = 30909600. Its totient is φ = 3306368.

The previous prime is 12638909. The next prime is 12638953. The reversal of 12638910 is 1983621.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2385 + ... + 5564.

It is an arithmetic number, because the mean of its divisors is an integer number (965925).

Almost surely, 2^12638910 is an apocalyptic number.

12638910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12638910 is an abundant number, since it is smaller than the sum of its proper divisors (18270690).

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

12638910 is a wasteful number, since it uses less digits than its factorization.

12638910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8012.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 12638910 is about 3555.1244703948. The cubic root of 12638910 is about 232.9359608371.

The spelling of 12638910 in words is "twelve million, six hundred thirty-eight thousand, nine hundred ten".