28259567 has 8 divisors (see below), whose sum is σ = 32345376. Its totient is φ = 24185952.

The previous prime is 28259533. The next prime is 28259579. The reversal of 28259567 is 76595282.

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

It is not a de Polignac number, because 28259567 - 2⁶ = 28259503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28259587) 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 7 ways as a sum of consecutive naturals, for example, 2633 + ... + 7965.

It is an arithmetic number, because the mean of its divisors is an integer number (4043172).

Almost surely, 2^28259567 is an apocalyptic number.

28259567 is a deficient number, since it is larger than the sum of its proper divisors (4085809).

28259567 is an equidigital number, since it uses as much as digits as its factorization.

28259567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6097.

The product of its digits is 302400, while the sum is 44.

The square root of 28259567 is about 5315.9728178387. The cubic root of 28259567 is about 304.5943438042.

The spelling of 28259567 in words is "twenty-eight million, two hundred fifty-nine thousand, five hundred sixty-seven".