28787332468 has 12 divisors (see below), whose sum is σ = 52002923392. Its totient is φ = 13929354360.

The previous prime is 28787332417. The next prime is 28787332489. The reversal of 28787332468 is 86423378782.

It is a happy number.

It is a super-4 number, since 4×28787332468⁴ (a number of 43 digits) contains 4444 as substring.

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, 116077830 + ... + 116078077.

Almost surely, 2^28787332468 is an apocalyptic number.

It is an amenable number.

28787332468 is a deficient number, since it is larger than the sum of its proper divisors (23215590924).

28787332468 is a wasteful number, since it uses less digits than its factorization.

28787332468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232155942 (or 232155940 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 58.

The spelling of 28787332468 in words is "twenty-eight billion, seven hundred eighty-seven million, three hundred thirty-two thousand, four hundred sixty-eight".