28288783872 has 80 divisors (see below), whose sum is σ = 83736805680. Its totient is φ = 9429590016.

The previous prime is 28288783847. The next prime is 28288783883. The reversal of 28288783872 is 27838788282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009353 + ... + 1037000.

It is an arithmetic number, because the mean of its divisors is an integer number (1046710071).

Almost surely, 2^28288783872 is an apocalyptic number.

It is an amenable number.

28288783872 is an abundant number, since it is smaller than the sum of its proper divisors (55448021808).

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

28288783872 is an equidigital number, since it uses as much as digits as its factorization.

28288783872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046380 (or 2046358 counting only the distinct ones).

The product of its digits is 38535168, while the sum is 63.

The spelling of 28288783872 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred eighty-three thousand, eight hundred seventy-two".