23407728 has 40 divisors (see below), whose sum is σ = 62424576. Its totient is φ = 7550400.

The previous prime is 23407711. The next prime is 23407729. The reversal of 23407728 is 82770432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23407729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6378 + ... + 9353.

Almost surely, 2^23407728 is an apocalyptic number.

It is an amenable number.

23407728 is an abundant number, since it is smaller than the sum of its proper divisors (39016848).

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

23407728 is a wasteful number, since it uses less digits than its factorization.

23407728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15773 (or 15767 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 23407728 is about 4838.1533667299. The cubic root of 23407728 is about 286.0573344229.

The spelling of 23407728 in words is "twenty-three million, four hundred seven thousand, seven hundred twenty-eight".