20039432528 has 10 divisors (see below), whose sum is σ = 38826400554. Its totient is φ = 10019716256.

The previous prime is 20039432521. The next prime is 20039432549. The reversal of 20039432528 is 82523493002.

It can be written as a sum of positive squares in only one way, i.e., 16674040384 + 3365392144 = 129128^2 + 58012^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20039432491 and 20039432500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20039432521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626232251 + ... + 626232282.

Almost surely, 2^20039432528 is an apocalyptic number.

It is an amenable number.

20039432528 is a deficient number, since it is larger than the sum of its proper divisors (18786968026).

20039432528 is a wasteful number, since it uses less digits than its factorization.

20039432528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252464541 (or 1252464535 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 20039432528 in words is "twenty billion, thirty-nine million, four hundred thirty-two thousand, five hundred twenty-eight".