23404355 has 24 divisors (see below), whose sum is σ = 31092432. Its totient is φ = 16811712.

The previous prime is 23404351. The next prime is 23404357. The reversal of 23404355 is 55340432.

It is not a de Polignac number, because 23404355 - 2² = 23404351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23404351) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 143504 + ... + 143666.

It is an arithmetic number, because the mean of its divisors is an integer number (1295518).

Almost surely, 2^23404355 is an apocalyptic number.

23404355 is a deficient number, since it is larger than the sum of its proper divisors (7688077).

23404355 is a wasteful number, since it uses less digits than its factorization.

23404355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 23404355 is about 4837.8047707612. The cubic root of 23404355 is about 286.0435936939.

Adding to 23404355 its reverse (55340432), we get a palindrome (78744787).

The spelling of 23404355 in words is "twenty-three million, four hundred four thousand, three hundred fifty-five".