28564363 has 4 divisors (see below), whose sum is σ = 28773000. Its totient is φ = 28355728.

The previous prime is 28564357. The next prime is 28564373. The reversal of 28564363 is 36346582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28564363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28564313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104113 + ... + 104386.

It is an arithmetic number, because the mean of its divisors is an integer number (7193250).

Almost surely, 2^28564363 is an apocalyptic number.

28564363 is a deficient number, since it is larger than the sum of its proper divisors (208637).

28564363 is a wasteful number, since it uses less digits than its factorization.

28564363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208636.

The product of its digits is 103680, while the sum is 37.

The square root of 28564363 is about 5344.5638736945. The cubic root of 28564363 is about 305.6855064121.

The spelling of 28564363 in words is "twenty-eight million, five hundred sixty-four thousand, three hundred sixty-three".