28333768 has 16 divisors (see below), whose sum is σ = 53997660. Its totient is φ = 13934400.

The previous prime is 28333763. The next prime is 28333817. The reversal of 28333768 is 86733382.

It can be written as a sum of positive squares in 2 ways, for example, as 22867524 + 5466244 = 4782^2 + 2338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28333768.

It is not an unprimeable number, because it can be changed into a prime (28333763) 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, 28543 + ... + 29518.

Almost surely, 2^28333768 is an apocalyptic number.

It is an amenable number.

28333768 is a deficient number, since it is larger than the sum of its proper divisors (25663892).

28333768 is a wasteful number, since it uses less digits than its factorization.

28333768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58128 (or 58124 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 28333768 is about 5322.9473038910. The cubic root of 28333768 is about 304.8607014170.

The spelling of 28333768 in words is "twenty-eight million, three hundred thirty-three thousand, seven hundred sixty-eight".