22604181 has 16 divisors (see below), whose sum is σ = 30697920. Its totient is φ = 14792960.

The previous prime is 22604171. The next prime is 22604189. The reversal of 22604181 is 18140622.

It is a cyclic number.

It is not a de Polignac number, because 22604181 - 2⁵ = 22604149 is a prime.

It is a super-2 number, since 2×22604181² = 1021897997361522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22604189) 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 15 ways as a sum of consecutive naturals, for example, 44155 + ... + 44663.

It is an arithmetic number, because the mean of its divisors is an integer number (1918620).

Almost surely, 2^22604181 is an apocalyptic number.

It is an amenable number.

22604181 is a deficient number, since it is larger than the sum of its proper divisors (8093739).

22604181 is a wasteful number, since it uses less digits than its factorization.

22604181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 22604181 is about 4754.3854492458. The cubic root of 22604181 is about 282.7458626573.

It can be divided in two parts, 2260 and 4181, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 22604181 in words is "twenty-two million, six hundred four thousand, one hundred eighty-one".