20920132 has 18 divisors (see below), whose sum is σ = 38892602. Its totient is φ = 9844224.

The previous prime is 20920129. The next prime is 20920139. The reversal of 20920132 is 23102902.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4468996 + 16451136 = 2114^2 + 4056^2 .

It is not an unprimeable number, because it can be changed into a prime (20920139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7893 + ... + 10204.

Almost surely, 2^20920132 is an apocalyptic number.

It is an amenable number.

20920132 is a deficient number, since it is larger than the sum of its proper divisors (17972470).

20920132 is a wasteful number, since it uses less digits than its factorization.

20920132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18135 (or 18116 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20920132 is about 4573.8530802814. The cubic root of 20920132 is about 275.5422117724.

The spelling of 20920132 in words is "twenty million, nine hundred twenty thousand, one hundred thirty-two".