22640542 has 16 divisors (see below), whose sum is σ = 34703280. Its totient is φ = 11074752.

The previous prime is 22640539. The next prime is 22640557. The reversal of 22640542 is 24504622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36628 + ... + 37240.

It is an arithmetic number, because the mean of its divisors is an integer number (2168955).

Almost surely, 2^22640542 is an apocalyptic number.

22640542 is a deficient number, since it is larger than the sum of its proper divisors (12062738).

22640542 is a wasteful number, since it uses less digits than its factorization.

22640542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 22640542 is about 4758.2078559054. The cubic root of 22640542 is about 282.8973894127.

The spelling of 22640542 in words is "twenty-two million, six hundred forty thousand, five hundred forty-two".