23400404 has 12 divisors (see below), whose sum is σ = 41178228. Its totient is φ = 11635200.

The previous prime is 23400397. The next prime is 23400413. The reversal of 23400404 is 40400432.

It can be written as a sum of positive squares in 2 ways, for example, as 3168400 + 20232004 = 1780^2 + 4498^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15437 + ... + 16884.

It is an arithmetic number, because the mean of its divisors is an integer number (3431519).

Almost surely, 2^23400404 is an apocalyptic number.

It is an amenable number.

23400404 is a deficient number, since it is larger than the sum of its proper divisors (17777824).

23400404 is a wasteful number, since it uses less digits than its factorization.

23400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32506 (or 32504 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 23400404 is about 4837.3964071595. The cubic root of 23400404 is about 286.0274966635.

Adding to 23400404 its reverse (40400432), we get a palindrome (63800836).

The spelling of 23400404 in words is "twenty-three million, four hundred thousand, four hundred four".