28545275180 has 24 divisors (see below), whose sum is σ = 59991565200. Its totient is φ = 11409255360.

The previous prime is 28545275167. The next prime is 28545275189. The reversal of 28545275180 is 8157254582.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28545275189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526955 + ... + 578594.

It is an arithmetic number, because the mean of its divisors is an integer number (2499648550).

Almost surely, 2^28545275180 is an apocalyptic number.

28545275180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28545275180 is an abundant number, since it is smaller than the sum of its proper divisors (31446290020).

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

28545275180 is a wasteful number, since it uses less digits than its factorization.

28545275180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106849 (or 1106847 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 47.

The spelling of 28545275180 in words is "twenty-eight billion, five hundred forty-five million, two hundred seventy-five thousand, one hundred eighty".