23132404 has 6 divisors (see below), whose sum is σ = 40481714. Its totient is φ = 11566200.

The previous prime is 23132371. The next prime is 23132407. The reversal of 23132404 is 40423132.

It can be written as a sum of positive squares in only one way, i.e., 17656804 + 5475600 = 4202^2 + 2340^2 .

It is a super-2 number, since 2×23132404² = 1070216229638432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132407) 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 as a sum of consecutive naturals, namely, 2891547 + ... + 2891554.

Almost surely, 2^23132404 is an apocalyptic number.

It is an amenable number.

23132404 is a deficient number, since it is larger than the sum of its proper divisors (17349310).

23132404 is a wasteful number, since it uses less digits than its factorization.

23132404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5783105 (or 5783103 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 23132404 is about 4809.6157850706. The cubic root of 23132404 is about 284.9313633833.

Adding to 23132404 its reverse (40423132), we get a palindrome (63555536).

The spelling of 23132404 in words is "twenty-three million, one hundred thirty-two thousand, four hundred four".