28216838916 has 120 divisors (see below), whose sum is σ = 86580854976. Its totient is φ = 7844040000.

The previous prime is 28216838887. The next prime is 28216838971. The reversal of 28216838916 is 61983861282.

It is a super-2 number, since 2×28216838916² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 84210 + ... + 252041.

Almost surely, 2^28216838916 is an apocalyptic number.

It is an amenable number.

28216838916 is an abundant number, since it is smaller than the sum of its proper divisors (58364016060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28216838916 is a wasteful number, since it uses less digits than its factorization.

28216838916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336311 (or 336300 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The spelling of 28216838916 in words is "twenty-eight billion, two hundred sixteen million, eight hundred thirty-eight thousand, nine hundred sixteen".