28363208 has 16 divisors (see below), whose sum is σ = 56309580. Its totient is φ = 13347328.

The previous prime is 28363183. The next prime is 28363229. The reversal of 28363208 is 80236382.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28111204 + 252004 = 5302^2 + 502^2 .

It is an unprimeable number.

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, 104141 + ... + 104412.

Almost surely, 2^28363208 is an apocalyptic number.

It is an amenable number.

28363208 is a deficient number, since it is larger than the sum of its proper divisors (27946372).

28363208 is a wasteful number, since it uses less digits than its factorization.

28363208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208576 (or 208572 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 28363208 is about 5325.7119711828. The cubic root of 28363208 is about 304.9662526488.

The spelling of 28363208 in words is "twenty-eight million, three hundred sixty-three thousand, two hundred eight".