28868170 has 16 divisors (see below), whose sum is σ = 52500168. Its totient is φ = 11427840.

The previous prime is 28868167. The next prime is 28868173. The reversal of 28868170 is 7186882.

It is an interprime number because it is at equal distance from previous prime (28868167) and next prime (28868173).

It can be written as a sum of positive squares in 4 ways, for example, as 17464041 + 11404129 = 4179^2 + 3377^2 .

It is not an unprimeable number, because it can be changed into a prime (28868173) 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, 13911 + ... + 15850.

Almost surely, 2^28868170 is an apocalyptic number.

28868170 is a deficient number, since it is larger than the sum of its proper divisors (23631998).

28868170 is a wasteful number, since it uses less digits than its factorization.

28868170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29865.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 28868170 is about 5372.9107567500. The cubic root of 28868170 is about 306.7654310642.

The spelling of 28868170 in words is "twenty-eight million, eight hundred sixty-eight thousand, one hundred seventy".