22004508 has 48 divisors (see below), whose sum is σ = 54629120. Its totient is φ = 6873984.

The previous prime is 22004497. The next prime is 22004539. The reversal of 22004508 is 80540022.

It is a congruent number.

It is an unprimeable number.

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, 23016 + ... + 23952.

Almost surely, 2^22004508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22004508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27314560).

22004508 is an abundant number, since it is smaller than the sum of its proper divisors (32624612).

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

22004508 is a wasteful number, since it uses less digits than its factorization.

22004508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066 (or 1064 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 22004508 is about 4690.8962896231. The cubic root of 22004508 is about 280.2230705362.

The spelling of 22004508 in words is "twenty-two million, four thousand, five hundred eight".