28325563 has 8 divisors (see below), whose sum is σ = 32509440. Its totient is φ = 24176040.

The previous prime is 28325543. The next prime is 28325567. The reversal of 28325563 is 36552382.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-28325563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28325567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6793 + ... + 10138.

It is an arithmetic number, because the mean of its divisors is an integer number (4063680).

Almost surely, 2^28325563 is an apocalyptic number.

28325563 is a deficient number, since it is larger than the sum of its proper divisors (4183877).

28325563 is a wasteful number, since it uses less digits than its factorization.

28325563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17177.

The product of its digits is 43200, while the sum is 34.

The square root of 28325563 is about 5322.1765284515. The cubic root of 28325563 is about 304.8312710033.

The spelling of 28325563 in words is "twenty-eight million, three hundred twenty-five thousand, five hundred sixty-three".