28206887132 has 12 divisors (see below), whose sum is σ = 49366431576. Its totient is φ = 14102192400.

The previous prime is 28206887113. The next prime is 28206887141. The reversal of 28206887132 is 23178860282.

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, 261119 + ... + 352982.

It is an arithmetic number, because the mean of its divisors is an integer number (4113869298).

Almost surely, 2^28206887132 is an apocalyptic number.

It is an amenable number.

28206887132 is a deficient number, since it is larger than the sum of its proper divisors (21159544444).

28206887132 is a wasteful number, since it uses less digits than its factorization.

28206887132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625588 (or 625586 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 28206887132 in words is "twenty-eight billion, two hundred six million, eight hundred eighty-seven thousand, one hundred thirty-two".