23911138 has 16 divisors (see below), whose sum is σ = 37558080. Its totient is φ = 11401936.

The previous prime is 23911127. The next prime is 23911169. The reversal of 23911138 is 83111932.

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, 2331 + ... + 7297.

It is an arithmetic number, because the mean of its divisors is an integer number (2347380).

Almost surely, 2^23911138 is an apocalyptic number.

23911138 is a deficient number, since it is larger than the sum of its proper divisors (13646942).

23911138 is a wasteful number, since it uses less digits than its factorization.

23911138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5081.

The product of its digits is 1296, while the sum is 28.

The square root of 23911138 is about 4889.9016350025. The cubic root of 23911138 is about 288.0934704967.

The spelling of 23911138 in words is "twenty-three million, nine hundred eleven thousand, one hundred thirty-eight".