23204405 has 32 divisors (see below), whose sum is σ = 34318080. Its totient is φ = 14699520.

The previous prime is 23204387. The next prime is 23204411. The reversal of 23204405 is 50440232.

It is not a de Polignac number, because 23204405 - 2¹⁴ = 23188021 is a prime.

It is a super-2 number, since 2×23204405² = 1076888822808050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34775 + ... + 35435.

It is an arithmetic number, because the mean of its divisors is an integer number (1072440).

Almost surely, 2^23204405 is an apocalyptic number.

It is an amenable number.

23204405 is a deficient number, since it is larger than the sum of its proper divisors (11113675).

23204405 is a wasteful number, since it uses less digits than its factorization.

23204405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 23204405 is about 4817.0950789869. The cubic root of 23204405 is about 285.2266792059.

Adding to 23204405 its reverse (50440232), we get a palindrome (73644637).

The spelling of 23204405 in words is "twenty-three million, two hundred four thousand, four hundred five".