28605180 has 24 divisors (see below), whose sum is σ = 80094672. Its totient is φ = 7628032.

The previous prime is 28605173. The next prime is 28605209. The reversal of 28605180 is 8150682.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238317 + ... + 238436.

It is an arithmetic number, because the mean of its divisors is an integer number (3337278).

Almost surely, 2^28605180 is an apocalyptic number.

28605180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28605180 is an abundant number, since it is smaller than the sum of its proper divisors (51489492).

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

28605180 is a wasteful number, since it uses less digits than its factorization.

28605180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476765 (or 476763 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 28605180 is about 5348.3810634621. The cubic root of 28605180 is about 305.8310400496.

The spelling of 28605180 in words is "twenty-eight million, six hundred five thousand, one hundred eighty".