28568283 has 4 divisors (see below), whose sum is σ = 38091048. Its totient is φ = 19045520.

The previous prime is 28568263. The next prime is 28568303. The reversal of 28568283 is 38286582.

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

It is an interprime number because it is at equal distance from previous prime (28568263) and next prime (28568303).

It is a cyclic number.

It is not a de Polignac number, because 28568283 - 2¹² = 28564187 is a prime.

It is a super-2 number, since 2×28568283² = 1632293587136178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28568203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4761378 + ... + 4761383.

It is an arithmetic number, because the mean of its divisors is an integer number (9522762).

Almost surely, 2^28568283 is an apocalyptic number.

28568283 is a deficient number, since it is larger than the sum of its proper divisors (9522765).

28568283 is an equidigital number, since it uses as much as digits as its factorization.

28568283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9522764.

The product of its digits is 184320, while the sum is 42.

The square root of 28568283 is about 5344.9305888851. The cubic root of 28568283 is about 305.6994892476.

The spelling of 28568283 in words is "twenty-eight million, five hundred sixty-eight thousand, two hundred eighty-three".