28942855876 has 135 divisors (see below), whose sum is σ = 60433513245. Its totient is φ = 12126581280.

The previous prime is 28942855873. The next prime is 28942855883. The reversal of 28942855876 is 67855824982.

The square root of 28942855876 is 170126.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25898464900 + 3044390976 = 160930^2 + 55176^2 .

It is a Duffinian number.

Its product of digits (77414400) is a multiple of the sum of its prime factors (160).

It is not an unprimeable number, because it can be changed into a prime (28942855873) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 782239330 + ... + 782239366.

Almost surely, 2^28942855876 is an apocalyptic number.

28942855876 is the 170126-th square number.

It is an amenable number.

28942855876 is an abundant number, since it is smaller than the sum of its proper divisors (31490657369).

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

28942855876 is an equidigital number, since it uses as much as digits as its factorization.

28942855876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 69 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 64.

Multiplying 28942855876 by its sum of digits (64), we get a square (1852342776064 = 1361008²).

The spelling of 28942855876 in words is "twenty-eight billion, nine hundred forty-two million, eight hundred fifty-five thousand, eight hundred seventy-six".