28028874 has 8 divisors (see below), whose sum is σ = 56057760. Its totient is φ = 9342956.

The previous prime is 28028863. The next prime is 28028879. The reversal of 28028874 is 47882082.

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

28028874 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28028879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2335734 + ... + 2335745.

It is an arithmetic number, because the mean of its divisors is an integer number (7007220).

Almost surely, 2^28028874 is an apocalyptic number.

28028874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28028874 is a wasteful number, since it uses less digits than its factorization.

28028874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671484.

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 28028874 is about 5294.2302556651. The cubic root of 28028874 is about 303.7632404599.

The spelling of 28028874 in words is "twenty-eight million, twenty-eight thousand, eight hundred seventy-four".