20507922 has 12 divisors (see below), whose sum is σ = 44433870. Its totient is φ = 6835968.

The previous prime is 20507911. The next prime is 20507969. The reversal of 20507922 is 22970502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17715681 + 2792241 = 4209^2 + 1671^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 569647 + ... + 569682.

Almost surely, 2^20507922 is an apocalyptic number.

20507922 is an abundant number, since it is smaller than the sum of its proper divisors (23925948).

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

20507922 is a wasteful number, since it uses less digits than its factorization.

20507922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139337 (or 1139334 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20507922 is about 4528.5673231167. The cubic root of 20507922 is about 273.7204334115.

The spelling of 20507922 in words is "twenty million, five hundred seven thousand, nine hundred twenty-two".