22620642 has 32 divisors (see below), whose sum is σ = 52259904. Its totient is φ = 6451200.

The previous prime is 22620629. The next prime is 22620649. The reversal of 22620642 is 24602622.

It is not an unprimeable number, because it can be changed into a prime (22620649) 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, 8959 + ... + 11202.

It is an arithmetic number, because the mean of its divisors is an integer number (1633122).

Almost surely, 2^22620642 is an apocalyptic number.

22620642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22620642 is an abundant number, since it is smaller than the sum of its proper divisors (29639262).

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

22620642 is a wasteful number, since it uses less digits than its factorization.

22620642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20194.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 22620642 is about 4756.1162727587. The cubic root of 22620642 is about 282.8144804985.

The spelling of 22620642 in words is "twenty-two million, six hundred twenty thousand, six hundred forty-two".