28564834 has 8 divisors (see below), whose sum is σ = 42955308. Its totient is φ = 14246400.

The previous prime is 28564819. The next prime is 28564871. The reversal of 28564834 is 43846582.

It can be written as a sum of positive squares in 2 ways, for example, as 26471025 + 2093809 = 5145^2 + 1447^2 .

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

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, 17007 + ... + 18610.

Almost surely, 2^28564834 is an apocalyptic number.

28564834 is a deficient number, since it is larger than the sum of its proper divisors (14390474).

28564834 is a wasteful number, since it uses less digits than its factorization.

28564834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36020.

The product of its digits is 184320, while the sum is 40.

The square root of 28564834 is about 5344.6079369772. The cubic root of 28564834 is about 305.6871865602.

The spelling of 28564834 in words is "twenty-eight million, five hundred sixty-four thousand, eight hundred thirty-four".