28863056 has 20 divisors (see below), whose sum is σ = 56553300. Its totient is φ = 14268672.

The previous prime is 28863041. The next prime is 28863083. The reversal of 28863056 is 65036882.

It can be written as a sum of positive squares in 2 ways, for example, as 13808656 + 15054400 = 3716^2 + 3880^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 8711 + ... + 11558.

It is an arithmetic number, because the mean of its divisors is an integer number (2827665).

Almost surely, 2^28863056 is an apocalyptic number.

It is an amenable number.

28863056 is a deficient number, since it is larger than the sum of its proper divisors (27690244).

28863056 is a wasteful number, since it uses less digits than its factorization.

28863056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20366 (or 20360 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 28863056 is about 5372.4348297583. The cubic root of 28863056 is about 306.7473154827.

The spelling of 28863056 in words is "twenty-eight million, eight hundred sixty-three thousand, fifty-six".