22604813 has 16 divisors (see below), whose sum is σ = 29667840. Its totient is φ = 16686000.

The previous prime is 22604807. The next prime is 22604821. The reversal of 22604813 is 31840622.

It is a cyclic number.

It is not a de Polignac number, because 22604813 - 2⁶ = 22604749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22604873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6263 + ... + 9188.

It is an arithmetic number, because the mean of its divisors is an integer number (1854240).

Almost surely, 2^22604813 is an apocalyptic number.

It is an amenable number.

22604813 is a deficient number, since it is larger than the sum of its proper divisors (7063027).

22604813 is a wasteful number, since it uses less digits than its factorization.

22604813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15488.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 22604813 is about 4754.4519137331. The cubic root of 22604813 is about 282.7484977704.

The spelling of 22604813 in words is "twenty-two million, six hundred four thousand, eight hundred thirteen".