22566620 has 24 divisors (see below), whose sum is σ = 47511744. Its totient is φ = 9003456.

The previous prime is 22566617. The next prime is 22566631. The reversal of 22566620 is 2666522.

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 7 ways as a sum of consecutive naturals, for example, 8042 + ... + 10478.

It is an arithmetic number, because the mean of its divisors is an integer number (1979656).

Almost surely, 2^22566620 is an apocalyptic number.

22566620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22566620 is an abundant number, since it is smaller than the sum of its proper divisors (24945124).

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

22566620 is a wasteful number, since it uses less digits than its factorization.

22566620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909 (or 2907 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 22566620 is about 4750.4336644142. The cubic root of 22566620 is about 282.5891644302.

The spelling of 22566620 in words is "twenty-two million, five hundred sixty-six thousand, six hundred twenty".