22055004 has 30 divisors (see below), whose sum is σ = 57656984. Its totient is φ = 7351560.

The previous prime is 22055003. The next prime is 22055021. The reversal of 22055004 is 40055022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22055003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 33712 + ... + 34359.

Almost surely, 2^22055004 is an apocalyptic number.

It is an amenable number.

22055004 is an abundant number, since it is smaller than the sum of its proper divisors (35601980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22055004 is a wasteful number, since it uses less digits than its factorization.

22055004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68087 (or 68076 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 22055004 is about 4696.2755455786. The cubic root of 22055004 is about 280.4372589806.

Adding to 22055004 its sum of digits (18), we get a palindrome (22055022).

The spelling of 22055004 in words is "twenty-two million, fifty-five thousand, four".