28843895120 has 40 divisors (see below), whose sum is σ = 67726055880. Its totient is φ = 11423321600.

The previous prime is 28843895111. The next prime is 28843895173. The reversal of 28843895120 is 2159834882.

It can be written as a sum of positive squares in 4 ways, for example, as 16376832784 + 12467062336 = 127972^2 + 111656^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1776815 + ... + 1792974.

It is an arithmetic number, because the mean of its divisors is an integer number (1693151397).

Almost surely, 2^28843895120 is an apocalyptic number.

28843895120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28843895120 is an abundant number, since it is smaller than the sum of its proper divisors (38882160760).

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

28843895120 is a wasteful number, since it uses less digits than its factorization.

28843895120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569903 (or 3569897 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 28843895120 in words is "twenty-eight billion, eight hundred forty-three million, eight hundred ninety-five thousand, one hundred twenty".