12509634 has 16 divisors (see below), whose sum is σ = 25159680. Its totient is φ = 4146480.

The previous prime is 12509611. The next prime is 12509641. The reversal of 12509634 is 43690521.

It is an alternating number because its digits alternate between odd and even.

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 7 ways as a sum of consecutive naturals, for example, 4674 + ... + 6845.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^12509634 is an apocalyptic number.

12509634 is an abundant number, since it is smaller than the sum of its proper divisors (12650046).

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

12509634 is a wasteful number, since it uses less digits than its factorization.

12509634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11705.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 12509634 is about 3536.8960968623. The cubic root of 12509634 is about 232.1390491255.

The spelling of 12509634 in words is "twelve million, five hundred nine thousand, six hundred thirty-four".