23404056 has 32 divisors (see below), whose sum is σ = 63011760. Its totient is φ = 7201152.

The previous prime is 23404049. The next prime is 23404057. The reversal of 23404056 is 65040432.

It is a super-2 number, since 2×23404056² = 1095499674502272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23404057) 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 7 ways as a sum of consecutive naturals, for example, 37195 + ... + 37818.

Almost surely, 2^23404056 is an apocalyptic number.

23404056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23404056 is an abundant number, since it is smaller than the sum of its proper divisors (39607704).

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

23404056 is a wasteful number, since it uses less digits than its factorization.

23404056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75035 (or 75031 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 23404056 is about 4837.7738682167. The cubic root of 23404056 is about 286.0423755816.

Adding to 23404056 its reverse (65040432), we get a palindrome (88444488).

The spelling of 23404056 in words is "twenty-three million, four hundred four thousand, fifty-six".