23990404 has 27 divisors (see below), whose sum is σ = 43937271. Its totient is φ = 11461320.

The previous prime is 23990401. The next prime is 23990411. The reversal of 23990404 is 40409932.

The square root of 23990404 is 4898.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23990401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 303637 + ... + 303715.

Almost surely, 2^23990404 is an apocalyptic number.

23990404 is the 4898-th square number.

It is an amenable number.

23990404 is a deficient number, since it is larger than the sum of its proper divisors (19946867).

23990404 is an equidigital number, since it uses as much as digits as its factorization.

23990404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The cubic root of 23990404 is about 288.4114649731.

The spelling of 23990404 in words is "twenty-three million, nine hundred ninety thousand, four hundred four".