28665274 has 16 divisors (see below), whose sum is σ = 46992960. Its totient is φ = 13005760.

The previous prime is 28665257. The next prime is 28665283. The reversal of 28665274 is 47256682.

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, 17682 + ... + 19234.

It is an arithmetic number, because the mean of its divisors is an integer number (2937060).

Almost surely, 2^28665274 is an apocalyptic number.

28665274 is a deficient number, since it is larger than the sum of its proper divisors (18327686).

28665274 is a wasteful number, since it uses less digits than its factorization.

28665274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405.

The product of its digits is 161280, while the sum is 40.

The square root of 28665274 is about 5353.9960776975. The cubic root of 28665274 is about 306.0450543824.

The spelling of 28665274 in words is "twenty-eight million, six hundred sixty-five thousand, two hundred seventy-four".