23473440 has 72 divisors (see below), whose sum is σ = 80108028. Its totient is φ = 6259200.

The previous prime is 23473433. The next prime is 23473451. The reversal of 23473440 is 4437432.

It can be written as a sum of positive squares in 2 ways, for example, as 23155344 + 318096 = 4812^2 + 564^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6711 + ... + 9590.

Almost surely, 2^23473440 is an apocalyptic number.

23473440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23473440 is an abundant number, since it is smaller than the sum of its proper divisors (56634588).

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

23473440 is a wasteful number, since it uses less digits than its factorization.

23473440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16322 (or 16311 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 23473440 is about 4844.9396281068. The cubic root of 23473440 is about 286.3247651492.

The spelling of 23473440 in words is "twenty-three million, four hundred seventy-three thousand, four hundred forty".