28006768 has 10 divisors (see below), whose sum is σ = 54263144. Its totient is φ = 14003376.

The previous prime is 28006763. The next prime is 28006777. The reversal of 28006768 is 86760082.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28006763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 875196 + ... + 875227.

Almost surely, 2^28006768 is an apocalyptic number.

It is an amenable number.

28006768 is a deficient number, since it is larger than the sum of its proper divisors (26256376).

28006768 is a wasteful number, since it uses less digits than its factorization.

28006768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750431 (or 1750425 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 28006768 is about 5292.1420993772. The cubic root of 28006768 is about 303.6833614477.

The spelling of 28006768 in words is "twenty-eight million, six thousand, seven hundred sixty-eight".