28841768 has 8 divisors (see below), whose sum is σ = 54078330. Its totient is φ = 14420880.

The previous prime is 28841767. The next prime is 28841773. The reversal of 28841768 is 86714882.

It can be written as a sum of positive squares in only one way, i.e., 24423364 + 4418404 = 4942^2 + 2102^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28841767) 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, 1802603 + ... + 1802618.

Almost surely, 2^28841768 is an apocalyptic number.

It is an amenable number.

28841768 is a deficient number, since it is larger than the sum of its proper divisors (25236562).

28841768 is a wasteful number, since it uses less digits than its factorization.

28841768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3605227 (or 3605223 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 28841768 is about 5370.4532397182. The cubic root of 28841768 is about 306.6718829190.

The spelling of 28841768 in words is "twenty-eight million, eight hundred forty-one thousand, seven hundred sixty-eight".