22604556 has 48 divisors (see below), whose sum is σ = 58028544. Its totient is φ = 6805056.

The previous prime is 22604551. The next prime is 22604563. The reversal of 22604556 is 65540622.

It is not an unprimeable number, because it can be changed into a prime (22604551) 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, 5791 + ... + 8873.

It is an arithmetic number, because the mean of its divisors is an integer number (1208928).

Almost surely, 2^22604556 is an apocalyptic number.

22604556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22604556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29014272).

22604556 is an abundant number, since it is smaller than the sum of its proper divisors (35423988).

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

22604556 is a wasteful number, since it uses less digits than its factorization.

22604556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150 (or 3148 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 22604556 is about 4754.4248863559. The cubic root of 22604556 is about 282.7474262192.

The spelling of 22604556 in words is "twenty-two million, six hundred four thousand, five hundred fifty-six".