28166974 has 8 divisors (see below), whose sum is σ = 46091448. Its totient is φ = 12803160.

The previous prime is 28166947. The next prime is 28166989. The reversal of 28166974 is 47966182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28166974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640137 + ... + 640180.

It is an arithmetic number, because the mean of its divisors is an integer number (5761431).

Almost surely, 2^28166974 is an apocalyptic number.

28166974 is a deficient number, since it is larger than the sum of its proper divisors (17924474).

28166974 is a wasteful number, since it uses less digits than its factorization.

28166974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280330.

The product of its digits is 145152, while the sum is 43.

The square root of 28166974 is about 5307.2567301761. The cubic root of 28166974 is about 304.2613101197.

The spelling of 28166974 in words is "twenty-eight million, one hundred sixty-six thousand, nine hundred seventy-four".