28720175876 has 48 divisors (see below), whose sum is σ = 60481397760. Its totient is φ = 11657377440.

The previous prime is 28720175873. The next prime is 28720175879. The reversal of 28720175876 is 67857102782.

It is an interprime number because it is at equal distance from previous prime (28720175873) and next prime (28720175879).

It is not an unprimeable number, because it can be changed into a prime (28720175873) by changing a digit.

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, 2585831 + ... + 2596913.

It is an arithmetic number, because the mean of its divisors is an integer number (1260029120).

Almost surely, 2^28720175876 is an apocalyptic number.

It is an amenable number.

28720175876 is an abundant number, since it is smaller than the sum of its proper divisors (31761221884).

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

28720175876 is a wasteful number, since it uses less digits than its factorization.

28720175876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15984 (or 15982 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 53.

The spelling of 28720175876 in words is "twenty-eight billion, seven hundred twenty million, one hundred seventy-five thousand, eight hundred seventy-six".