22579640 has 16 divisors (see below), whose sum is σ = 50804280. Its totient is φ = 9031840.

The previous prime is 22579639. The next prime is 22579673. The reversal of 22579640 is 4697522.

It is a self number, because there is not a number n which added to its sum of digits gives 22579640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282206 + ... + 282285.

Almost surely, 2^22579640 is an apocalyptic number.

22579640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22579640 is an abundant number, since it is smaller than the sum of its proper divisors (28224640).

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

22579640 is a wasteful number, since it uses less digits than its factorization.

22579640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564502 (or 564498 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 22579640 is about 4751.8038680063. The cubic root of 22579640 is about 282.6435013748.

The spelling of 22579640 in words is "twenty-two million, five hundred seventy-nine thousand, six hundred forty".