28540180 has 24 divisors (see below), whose sum is σ = 60046560. Its totient is φ = 11394720.

The previous prime is 28540163. The next prime is 28540189. The reversal of 28540180 is 8104582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28540189) 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, 13815 + ... + 15745.

It is an arithmetic number, because the mean of its divisors is an integer number (2501940).

Almost surely, 2^28540180 is an apocalyptic number.

28540180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28540180 is an abundant number, since it is smaller than the sum of its proper divisors (31506380).

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

28540180 is a wasteful number, since it uses less digits than its factorization.

28540180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679 (or 2677 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 28540180 is about 5342.3010023772. The cubic root of 28540180 is about 305.5992161425.

The spelling of 28540180 in words is "twenty-eight million, five hundred forty thousand, one hundred eighty".