28874178 has 16 divisors (see below), whose sum is σ = 64164960. Its totient is φ = 9624708.

The previous prime is 28874161. The next prime is 28874189. The reversal of 28874178 is 87147882.

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, 267300 + ... + 267407.

It is an arithmetic number, because the mean of its divisors is an integer number (4010310).

Almost surely, 2^28874178 is an apocalyptic number.

28874178 is an abundant number, since it is smaller than the sum of its proper divisors (35290782).

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

28874178 is a wasteful number, since it uses less digits than its factorization.

28874178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534718 (or 534712 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 28874178 is about 5373.4698287047. The cubic root of 28874178 is about 306.7867107743.

The spelling of 28874178 in words is "twenty-eight million, eight hundred seventy-four thousand, one hundred seventy-eight".