23749428 has 12 divisors (see below), whose sum is σ = 55415360. Its totient is φ = 7916472.

The previous prime is 23749417. The next prime is 23749469. The reversal of 23749428 is 82494732.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989548 + ... + 989571.

Almost surely, 2^23749428 is an apocalyptic number.

It is an amenable number.

23749428 is an abundant number, since it is smaller than the sum of its proper divisors (31665932).

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

23749428 is a wasteful number, since it uses less digits than its factorization.

23749428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979126 (or 1979124 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 23749428 is about 4873.3384860894. The cubic root of 23749428 is about 287.4425463013.

The spelling of 23749428 in words is "twenty-three million, seven hundred forty-nine thousand, four hundred twenty-eight".