20922844 has 12 divisors (see below), whose sum is σ = 36666504. Its totient is φ = 10446704.

The previous prime is 20922829. The next prime is 20922851. The reversal of 20922844 is 44822902.

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, 94 + ... + 6469.

It is an arithmetic number, because the mean of its divisors is an integer number (3055542).

Almost surely, 2^20922844 is an apocalyptic number.

It is an amenable number.

20922844 is a deficient number, since it is larger than the sum of its proper divisors (15743660).

20922844 is a wasteful number, since it uses less digits than its factorization.

20922844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7364 (or 7362 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20922844 is about 4574.1495384388. The cubic root of 20922844 is about 275.5541179782.

The spelling of 20922844 in words is "twenty million, nine hundred twenty-two thousand, eight hundred forty-four".