28262816 has 12 divisors (see below), whose sum is σ = 55642482. Its totient is φ = 14131392.

The previous prime is 28262809. The next prime is 28262831. The reversal of 28262816 is 61826282.

It can be written as a sum of positive squares in only one way, i.e., 26832400 + 1430416 = 5180^2 + 1196^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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 as a sum of consecutive naturals, namely, 441575 + ... + 441638.

Almost surely, 2^28262816 is an apocalyptic number.

It is an amenable number.

28262816 is a deficient number, since it is larger than the sum of its proper divisors (27379666).

28262816 is an equidigital number, since it uses as much as digits as its factorization.

28262816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883223 (or 883215 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 28262816 is about 5316.2783975258. The cubic root of 28262816 is about 304.6060164187.

The spelling of 28262816 in words is "twenty-eight million, two hundred sixty-two thousand, eight hundred sixteen".