28268608 has 14 divisors (see below), whose sum is σ = 56095646. Its totient is φ = 14134272.

The previous prime is 28268567. The next prime is 28268609. The reversal of 28268608 is 80686282.

It can be written as a sum of positive squares in only one way, i.e., 22353984 + 5914624 = 4728^2 + 2432^2 .

It is a super-2 number, since 2×28268608² = 1598228396515328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28268609) 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 as a sum of consecutive naturals, namely, 220785 + ... + 220912.

Almost surely, 2^28268608 is an apocalyptic number.

It is an amenable number.

28268608 is a deficient number, since it is larger than the sum of its proper divisors (27827038).

28268608 is an equidigital number, since it uses as much as digits as its factorization.

28268608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441709 (or 441699 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 28268608 is about 5316.8231115959. The cubic root of 28268608 is about 304.6268229977.

The spelling of 28268608 in words is "twenty-eight million, two hundred sixty-eight thousand, six hundred eight".