28056107828 has 48 divisors (see below), whose sum is σ = 59433373440. Its totient is φ = 11312856576.

The previous prime is 28056107803. The next prime is 28056107837. The reversal of 28056107828 is 82870165082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665713 + ... + 1682471.

It is an arithmetic number, because the mean of its divisors is an integer number (1238195280).

Almost surely, 2^28056107828 is an apocalyptic number.

28056107828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28056107828 is an abundant number, since it is smaller than the sum of its proper divisors (31377265612).

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

28056107828 is a wasteful number, since it uses less digits than its factorization.

28056107828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20304 (or 20302 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 28056107828 in words is "twenty-eight billion, fifty-six million, one hundred seven thousand, eight hundred twenty-eight".