28515676808 has 16 divisors (see below), whose sum is σ = 53501038080. Its totient is φ = 14248733328.

The previous prime is 28515676781. The next prime is 28515676817. The reversal of 28515676808 is 80867651582.

It is a happy 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, 1124816 + ... + 1149887.

It is an arithmetic number, because the mean of its divisors is an integer number (3343814880).

Almost surely, 2^28515676808 is an apocalyptic number.

It is an amenable number.

28515676808 is a deficient number, since it is larger than the sum of its proper divisors (24985361272).

28515676808 is a wasteful number, since it uses less digits than its factorization.

28515676808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276276 (or 2276272 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 56.

The spelling of 28515676808 in words is "twenty-eight billion, five hundred fifteen million, six hundred seventy-six thousand, eight hundred eight".