28563535 has 48 divisors (see below), whose sum is σ = 46379520. Its totient is φ = 16398720.

The previous prime is 28563533. The next prime is 28563551. The reversal of 28563535 is 53536582.

28563535 = 27³ + 28³ + ... + 103³.

It is not a de Polignac number, because 28563535 - 2¹ = 28563533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28563494 and 28563503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28563533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64846 + ... + 65284.

It is an arithmetic number, because the mean of its divisors is an integer number (966240).

Almost surely, 2^28563535 is an apocalyptic number.

28563535 is a deficient number, since it is larger than the sum of its proper divisors (17815985).

28563535 is a wasteful number, since it uses less digits than its factorization.

28563535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 475 counting only the distinct ones).

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

The square root of 28563535 is about 5344.4864112466. The cubic root of 28563535 is about 305.6825527311.

The spelling of 28563535 in words is "twenty-eight million, five hundred sixty-three thousand, five hundred thirty-five".