28534666 has 8 divisors (see below), whose sum is σ = 44278020. Its totient is φ = 13775328.

The previous prime is 28534661. The next prime is 28534669. The reversal of 28534666 is 66643582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24790441 + 3744225 = 4979^2 + 1935^2 .

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 (28534661) 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, 245931 + ... + 246046.

Almost surely, 2^28534666 is an apocalyptic number.

28534666 is a deficient number, since it is larger than the sum of its proper divisors (15743354).

28534666 is a wasteful number, since it uses less digits than its factorization.

28534666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492008.

The product of its digits is 207360, while the sum is 40.

The square root of 28534666 is about 5341.7849076877. The cubic root of 28534666 is about 305.5795341525.

The spelling of 28534666 in words is "twenty-eight million, five hundred thirty-four thousand, six hundred sixty-six".