28166976 has 84 divisors (see below), whose sum is σ = 81889600. Its totient is φ = 9255168.

The previous prime is 28166947. The next prime is 28166989. The reversal of 28166976 is 67966182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45195 + ... + 45813.

Almost surely, 2^28166976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28166976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40944800).

28166976 is an abundant number, since it is smaller than the sum of its proper divisors (53722624).

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

28166976 is a wasteful number, since it uses less digits than its factorization.

28166976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 703 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 28166976 is about 5307.2569185974. The cubic root of 28166976 is about 304.2613173211.

The spelling of 28166976 in words is "twenty-eight million, one hundred sixty-six thousand, nine hundred seventy-six".