28832563 has 4 divisors (see below), whose sum is σ = 28852488. Its totient is φ = 28812640.

The previous prime is 28832549. The next prime is 28832569. The reversal of 28832563 is 36523882.

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

It is a cyclic number.

It is not a de Polignac number, because 28832563 - 2¹³ = 28824371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28832569) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7606 + ... + 10747.

It is an arithmetic number, because the mean of its divisors is an integer number (7213122).

Almost surely, 2^28832563 is an apocalyptic number.

28832563 is a deficient number, since it is larger than the sum of its proper divisors (19925).

28832563 is a wasteful number, since it uses less digits than its factorization.

28832563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19924.

The product of its digits is 69120, while the sum is 37.

The square root of 28832563 is about 5369.5961673109. The cubic root of 28832563 is about 306.6392541397.

The spelling of 28832563 in words is "twenty-eight million, eight hundred thirty-two thousand, five hundred sixty-three".