23289904 has 20 divisors (see below), whose sum is σ = 49226760. Its totient is φ = 10586240.

The previous prime is 23289887. The next prime is 23289907. The reversal of 23289904 is 40998232.

It is not an unprimeable number, because it can be changed into a prime (23289907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65989 + ... + 66340.

It is an arithmetic number, because the mean of its divisors is an integer number (2461338).

Almost surely, 2^23289904 is an apocalyptic number.

It is an amenable number.

23289904 is an abundant number, since it is smaller than the sum of its proper divisors (25936856).

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

23289904 is a wasteful number, since it uses less digits than its factorization.

23289904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132348 (or 132342 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 23289904 is about 4825.9614586111. The cubic root of 23289904 is about 285.5765654361.

The spelling of 23289904 in words is "twenty-three million, two hundred eighty-nine thousand, nine hundred four".