28674985 has 4 divisors (see below), whose sum is σ = 34409988. Its totient is φ = 22939984.

The previous prime is 28674977. The next prime is 28675013. The reversal of 28674985 is 58947682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13682601 + 14992384 = 3699^2 + 3872^2 .

It is a cyclic number.

It is not a de Polignac number, because 28674985 - 2³ = 28674977 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2867494 + ... + 2867503.

It is an arithmetic number, because the mean of its divisors is an integer number (8602497).

Almost surely, 2^28674985 is an apocalyptic number.

It is an amenable number.

28674985 is a deficient number, since it is larger than the sum of its proper divisors (5735003).

28674985 is an equidigital number, since it uses as much as digits as its factorization.

28674985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735002.

The product of its digits is 967680, while the sum is 49.

The square root of 28674985 is about 5354.9028936107. The cubic root of 28674985 is about 306.0796103400.

The spelling of 28674985 in words is "twenty-eight million, six hundred seventy-four thousand, nine hundred eighty-five".