28676233 has 4 divisors (see below), whose sum is σ = 29217348. Its totient is φ = 28135120.

The previous prime is 28676231. The next prime is 28676237. The reversal of 28676233 is 33267682.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7991929 + 20684304 = 2827^2 + 4548^2 .

It is a cyclic number.

It is not a de Polignac number, because 28676233 - 2¹ = 28676231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28676192 and 28676201.

It is not an unprimeable number, because it can be changed into a prime (28676231) 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, 270478 + ... + 270583.

It is an arithmetic number, because the mean of its divisors is an integer number (7304337).

Almost surely, 2^28676233 is an apocalyptic number.

It is an amenable number.

28676233 is a deficient number, since it is larger than the sum of its proper divisors (541115).

28676233 is an equidigital number, since it uses as much as digits as its factorization.

28676233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541114.

The product of its digits is 72576, while the sum is 37.

The square root of 28676233 is about 5355.0194210666. The cubic root of 28676233 is about 306.0840507005.

The spelling of 28676233 in words is "twenty-eight million, six hundred seventy-six thousand, two hundred thirty-three".