28276306 has 16 divisors (see below), whose sum is σ = 44169048. Its totient is φ = 13564800.

The previous prime is 28276277. The next prime is 28276307. The reversal of 28276306 is 60367282.

It can be written as a sum of positive squares in 4 ways, for example, as 12996025 + 15280281 = 3605^2 + 3909^2 .

It is not an unprimeable number, because it can be changed into a prime (28276307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2176 + ... + 7828.

Almost surely, 2^28276306 is an apocalyptic number.

28276306 is a deficient number, since it is larger than the sum of its proper divisors (15892742).

28276306 is a wasteful number, since it uses less digits than its factorization.

28276306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5757.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 28276306 is about 5317.5469908596. The cubic root of 28276306 is about 304.6544720947.

It can be divided in two parts, 28276 and 306, that added together give a palindrome (28582).

The spelling of 28276306 in words is "twenty-eight million, two hundred seventy-six thousand, three hundred six".