28517074 has 8 divisors (see below), whose sum is σ = 43582860. Its totient is φ = 13989456.

The previous prime is 28517053. The next prime is 28517077. The reversal of 28517074 is 47071582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27112849 + 1404225 = 5207^2 + 1185^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28517077) 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, 134409 + ... + 134620.

Almost surely, 2^28517074 is an apocalyptic number.

28517074 is a deficient number, since it is larger than the sum of its proper divisors (15065786).

28517074 is a wasteful number, since it uses less digits than its factorization.

28517074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269084.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 28517074 is about 5340.1380131978. The cubic root of 28517074 is about 305.5167232977.

The spelling of 28517074 in words is "twenty-eight million, five hundred seventeen thousand, seventy-four".