20922056 has 8 divisors (see below), whose sum is σ = 39228870. Its totient is φ = 10461024.

The previous prime is 20922043. The next prime is 20922061. The reversal of 20922056 is 65022902.

It can be written as a sum of positive squares in only one way, i.e., 17056900 + 3865156 = 4130^2 + 1966^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1307621 + ... + 1307636.

Almost surely, 2^20922056 is an apocalyptic number.

It is an amenable number.

20922056 is a deficient number, since it is larger than the sum of its proper divisors (18306814).

20922056 is a wasteful number, since it uses less digits than its factorization.

20922056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615263 (or 2615259 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20922056 is about 4574.0634013971. The cubic root of 20922056 is about 275.5506586115.

Adding to 20922056 its reverse (65022902), we get a palindrome (85944958).

The spelling of 20922056 in words is "twenty million, nine hundred twenty-two thousand, fifty-six".