28315838180 has 48 divisors (see below), whose sum is σ = 71955547776. Its totient is φ = 9137210880.

The previous prime is 28315838179. The next prime is 28315838189. The reversal of 28315838180 is 8183851382.

It is not an unprimeable number, because it can be changed into a prime (28315838189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5946326 + ... + 5951085.

It is an arithmetic number, because the mean of its divisors is an integer number (1499073912).

Almost surely, 2^28315838180 is an apocalyptic number.

28315838180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28315838180 is an abundant number, since it is smaller than the sum of its proper divisors (43639709596).

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

28315838180 is a wasteful number, since it uses less digits than its factorization.

28315838180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11897444 (or 11897442 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 47.

The spelling of 28315838180 in words is "twenty-eight billion, three hundred fifteen million, eight hundred thirty-eight thousand, one hundred eighty".