28574666 has 8 divisors (see below), whose sum is σ = 42891204. Its totient is φ = 14277600.

The previous prime is 28574633. The next prime is 28574669. The reversal of 28574666 is 66647582.

It can be written as a sum of positive squares in 2 ways, for example, as 25755625 + 2819041 = 5075^2 + 1679^2 .

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

It is a super-3 number, since 3×28574666³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28574669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365 + ... + 7568.

Almost surely, 2^28574666 is an apocalyptic number.

28574666 is a deficient number, since it is larger than the sum of its proper divisors (14316538).

28574666 is a wasteful number, since it uses less digits than its factorization.

28574666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9736.

The product of its digits is 483840, while the sum is 44.

The square root of 28574666 is about 5345.5276633837. The cubic root of 28574666 is about 305.7222549903.

The spelling of 28574666 in words is "twenty-eight million, five hundred seventy-four thousand, six hundred sixty-six".