28667020252 has 12 divisors (see below), whose sum is σ = 54026307496. Its totient is φ = 13230932400.

The previous prime is 28667020237. The next prime is 28667020271. The reversal of 28667020252 is 25202076682.

It is a happy number.

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, 275644374 + ... + 275644477.

Almost surely, 2^28667020252 is an apocalyptic number.

It is an amenable number.

28667020252 is a deficient number, since it is larger than the sum of its proper divisors (25359287244).

28667020252 is a wasteful number, since it uses less digits than its factorization.

28667020252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551288868 (or 551288866 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 28667020252 in words is "twenty-eight billion, six hundred sixty-seven million, twenty thousand, two hundred fifty-two".