28560188 has 6 divisors (see below), whose sum is σ = 49980336. Its totient is φ = 14280092.

The previous prime is 28560179. The next prime is 28560199. The reversal of 28560188 is 88106582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570020 + ... + 3570027.

It is an arithmetic number, because the mean of its divisors is an integer number (8330056).

Almost surely, 2^28560188 is an apocalyptic number.

It is an amenable number.

28560188 is a deficient number, since it is larger than the sum of its proper divisors (21420148).

28560188 is a wasteful number, since it uses less digits than its factorization.

28560188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7140051 (or 7140049 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 28560188 is about 5344.1732756339. The cubic root of 28560188 is about 305.6706125719.

The spelling of 28560188 in words is "twenty-eight million, five hundred sixty thousand, one hundred eighty-eight".