28056442132 has 12 divisors (see below), whose sum is σ = 49180473076. Its totient is φ = 14004878400.

The previous prime is 28056442111. The next prime is 28056442159. The reversal of 28056442132 is 23124465082.

It can be written as a sum of positive squares in 2 ways, for example, as 18704391696 + 9352050436 = 136764^2 + 96706^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28056442091 and 28056442100.

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, 5832963 + ... + 5837770.

Almost surely, 2^28056442132 is an apocalyptic number.

It is an amenable number.

28056442132 is a deficient number, since it is larger than the sum of its proper divisors (21124030944).

28056442132 is a wasteful number, since it uses less digits than its factorization.

28056442132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11671338 (or 11671336 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 28056442132 in words is "twenty-eight billion, fifty-six million, four hundred forty-two thousand, one hundred thirty-two".