22613004 has 18 divisors (see below), whose sum is σ = 57160740. Its totient is φ = 7537656.

The previous prime is 22612999. The next prime is 22613023. The reversal of 22613004 is 40031622.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×22613004² = 1022695899808032, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 314034 + ... + 314105.

Almost surely, 2^22613004 is an apocalyptic number.

It is an amenable number.

22613004 is an abundant number, since it is smaller than the sum of its proper divisors (34547736).

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

22613004 is a wasteful number, since it uses less digits than its factorization.

22613004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628149 (or 628144 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22613004 is about 4755.3132388939. The cubic root of 22613004 is about 282.7826455610.

Adding to 22613004 its reverse (40031622), we get a palindrome (62644626).

The spelling of 22613004 in words is "twenty-two million, six hundred thirteen thousand, four".