28875032320 has 36 divisors (see below), whose sum is σ = 69164728920. Its totient is φ = 11550012416.

The previous prime is 28875032311. The next prime is 28875032341. The reversal of 28875032320 is 2323057882.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11278030 + ... + 11280589.

It is an arithmetic number, because the mean of its divisors is an integer number (1921242470).

Almost surely, 2^28875032320 is an apocalyptic number.

28875032320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28875032320 is an abundant number, since it is smaller than the sum of its proper divisors (40289696600).

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

28875032320 is an equidigital number, since it uses as much as digits as its factorization.

28875032320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22558640 (or 22558626 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 28875032320 in words is "twenty-eight billion, eight hundred seventy-five million, thirty-two thousand, three hundred twenty".