23639434 has 16 divisors (see below), whose sum is σ = 43642368. Its totient is φ = 9351792.

The previous prime is 23639419. The next prime is 23639461. The reversal of 23639434 is 43493632.

It is a self number, because there is not a number n which added to its sum of digits gives 23639434.

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, 64762 + ... + 65125.

It is an arithmetic number, because the mean of its divisors is an integer number (2727648).

Almost surely, 2^23639434 is an apocalyptic number.

23639434 is a deficient number, since it is larger than the sum of its proper divisors (20002934).

23639434 is a wasteful number, since it uses less digits than its factorization.

23639434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129909.

The product of its digits is 46656, while the sum is 34.

The square root of 23639434 is about 4862.0401067865. The cubic root of 23639434 is about 286.9981020242.

The spelling of 23639434 in words is "twenty-three million, six hundred thirty-nine thousand, four hundred thirty-four".