23404036 has 12 divisors (see below), whose sum is σ = 43366428. Its totient is φ = 11013632.

The previous prime is 23404033. The next prime is 23404049. The reversal of 23404036 is 63040432.

It can be written as a sum of positive squares in 2 ways, for example, as 8964036 + 14440000 = 2994^2 + 3800^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23403998 and 23404016.

It is not an unprimeable number, because it can be changed into a prime (23404033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172021 + ... + 172156.

It is an arithmetic number, because the mean of its divisors is an integer number (3613869).

Almost surely, 2^23404036 is an apocalyptic number.

It is an amenable number.

23404036 is a deficient number, since it is larger than the sum of its proper divisors (19962392).

23404036 is a wasteful number, since it uses less digits than its factorization.

23404036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344198 (or 344196 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 23404036 is about 4837.7718011498. The cubic root of 23404036 is about 286.0422941022.

Adding to 23404036 its reverse (63040432), we get a palindrome (86444468).

The spelling of 23404036 in words is "twenty-three million, four hundred four thousand, thirty-six".