28295197870828 has 36 divisors (see below), whose sum is σ = 58129387543920. Its totient is φ = 12015260947872.

The previous prime is 28295197870757. The next prime is 28295197870829. The reversal of 28295197870828 is 82807879159282.

It is not an unprimeable number, because it can be changed into a prime (28295197870829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 662195400 + ... + 662238127.

Almost surely, 2^{28295197870828} is an apocalyptic number.

28295197870828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28295197870828 is an abundant number, since it is smaller than the sum of its proper divisors (29834189673092).

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

28295197870828 is a wasteful number, since it uses less digits than its factorization.

28295197870828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324433654 (or 1324433645 counting only the distinct ones).

The product of its (nonzero) digits is 650280960, while the sum is 76.

The spelling of 28295197870828 in words is "twenty-eight trillion, two hundred ninety-five billion, one hundred ninety-seven million, eight hundred seventy thousand, eight hundred twenty-eight".