28667874 has 16 divisors (see below), whose sum is σ = 57844512. Its totient is φ = 9471168.

The previous prime is 28667869. The next prime is 28667911. The reversal of 28667874 is 47876682.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20464 + ... + 21819.

It is an arithmetic number, because the mean of its divisors is an integer number (3615282).

Almost surely, 2^28667874 is an apocalyptic number.

28667874 is an abundant number, since it is smaller than the sum of its proper divisors (29176638).

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

28667874 is a wasteful number, since it uses less digits than its factorization.

28667874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42401.

The product of its digits is 903168, while the sum is 48.

The square root of 28667874 is about 5354.2388814845. The cubic root of 28667874 is about 306.0543070771.

The spelling of 28667874 in words is "twenty-eight million, six hundred sixty-seven thousand, eight hundred seventy-four".