28000170 has 48 divisors (see below), whose sum is σ = 79421472. Its totient is φ = 6787680.

The previous prime is 28000163. The next prime is 28000183. The reversal of 28000170 is 7100082.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13152 + ... + 15131.

It is an arithmetic number, because the mean of its divisors is an integer number (1654614).

Almost surely, 2^28000170 is an apocalyptic number.

28000170 is an abundant number, since it is smaller than the sum of its proper divisors (51421302).

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

28000170 is a wasteful number, since it uses less digits than its factorization.

28000170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28307 (or 28304 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 28000170 is about 5291.5186855949. The cubic root of 28000170 is about 303.6595117341.

The spelling of 28000170 in words is "twenty-eight million, one hundred seventy", and thus it is an aban number.