20622544 has 20 divisors (see below), whose sum is σ = 40265280. Its totient is φ = 10231520.

The previous prime is 20622529. The next prime is 20622583. The reversal of 20622544 is 44522602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2824 + ... + 7015.

It is an arithmetic number, because the mean of its divisors is an integer number (2013264).

Almost surely, 2^20622544 is an apocalyptic number.

It is an amenable number.

20622544 is a deficient number, since it is larger than the sum of its proper divisors (19642736).

20622544 is a wasteful number, since it uses less digits than its factorization.

20622544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9978 (or 9972 counting only the distinct ones).

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

The square root of 20622544 is about 4541.2051263954. The cubic root of 20622544 is about 274.2294417876.

The spelling of 20622544 in words is "twenty million, six hundred twenty-two thousand, five hundred forty-four".