28563355 has 12 divisors (see below), whose sum is σ = 35834400. Its totient is φ = 21855152.

The previous prime is 28563331. The next prime is 28563361. The reversal of 28563355 is 55336582.

28563355 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 28563355 - 2⁵ = 28563323 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2755 + ... + 8044.

It is an arithmetic number, because the mean of its divisors is an integer number (2986200).

Almost surely, 2^28563355 is an apocalyptic number.

28563355 is a deficient number, since it is larger than the sum of its proper divisors (7271045).

28563355 is a wasteful number, since it uses less digits than its factorization.

28563355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10850 (or 10827 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 28563355 is about 5344.4695714355. The cubic root of 28563355 is about 305.6819106190.

The spelling of 28563355 in words is "twenty-eight million, five hundred sixty-three thousand, three hundred fifty-five".