23906404 has 12 divisors (see below), whose sum is σ = 42461104. Its totient is φ = 11774664.

The previous prime is 23906401. The next prime is 23906413. The reversal of 23906404 is 40460932.

It is a super-2 number, since 2×23906404² = 1143032304422432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23906401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44334 + ... + 44869.

Almost surely, 2^23906404 is an apocalyptic number.

It is an amenable number.

23906404 is a deficient number, since it is larger than the sum of its proper divisors (18554700).

23906404 is a wasteful number, since it uses less digits than its factorization.

23906404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89274 (or 89272 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 23906404 is about 4889.4175522244. The cubic root of 23906404 is about 288.0744567007.

It can be divided in two parts, 23906 and 404, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 23906404 in words is "twenty-three million, nine hundred six thousand, four hundred four".