23291904 has 96 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 7274496.

The previous prime is 23291897. The next prime is 23291941. The reversal of 23291904 is 40919232.

It is a tau number, because it is divible by the number of its divisors (96).

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, 104337 + ... + 104559.

It is an arithmetic number, because the mean of its divisors is an integer number (687960).

Almost surely, 2^23291904 is an apocalyptic number.

23291904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23291904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

23291904 is an abundant number, since it is smaller than the sum of its proper divisors (42752256).

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

23291904 is a wasteful number, since it uses less digits than its factorization.

23291904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 23291904 is about 4826.1686667583. The cubic root of 23291904 is about 285.5847397475.

The spelling of 23291904 in words is "twenty-three million, two hundred ninety-one thousand, nine hundred four".