28825695978 has 32 divisors (see below), whose sum is σ = 59031078912. Its totient is φ = 9381246000.

The previous prime is 28825695961. The next prime is 28825696063. The reversal of 28825695978 is 87959652882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284598 + ... + 372353.

It is an arithmetic number, because the mean of its divisors is an integer number (1844721216).

Almost surely, 2^28825695978 is an apocalyptic number.

28825695978 is an abundant number, since it is smaller than the sum of its proper divisors (30205382934).

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

28825695978 is a wasteful number, since it uses less digits than its factorization.

28825695978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657130.

The product of its digits is 174182400, while the sum is 69.

The spelling of 28825695978 in words is "twenty-eight billion, eight hundred twenty-five million, six hundred ninety-five thousand, nine hundred seventy-eight".