28245180 has 48 divisors (see below), whose sum is σ = 79478784. Its totient is φ = 7494720.

The previous prime is 28245179. The next prime is 28245199. The reversal of 28245180 is 8154282.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12325 + ... + 14435.

It is an arithmetic number, because the mean of its divisors is an integer number (1655808).

Almost surely, 2^28245180 is an apocalyptic number.

28245180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28245180 is an abundant number, since it is smaller than the sum of its proper divisors (51233604).

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

28245180 is a wasteful number, since it uses less digits than its factorization.

28245180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346 (or 2344 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 28245180 is about 5314.6194595662. The cubic root of 28245180 is about 304.5426451741.

The spelling of 28245180 in words is "twenty-eight million, two hundred forty-five thousand, one hundred eighty".