28582855 has 8 divisors (see below), whose sum is σ = 39199392. Its totient is φ = 19599648.

The previous prime is 28582789. The next prime is 28582861. The reversal of 28582855 is 55828582.

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

It is a cyclic number.

It is not a de Polignac number, because 28582855 - 2¹⁵ = 28550087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408292 + ... + 408361.

It is an arithmetic number, because the mean of its divisors is an integer number (4899924).

Almost surely, 2^28582855 is an apocalyptic number.

28582855 is a deficient number, since it is larger than the sum of its proper divisors (10616537).

28582855 is an equidigital number, since it uses as much as digits as its factorization.

28582855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816665.

The product of its digits is 256000, while the sum is 43.

The square root of 28582855 is about 5346.2935759272. The cubic root of 28582855 is about 305.7514570863.

The spelling of 28582855 in words is "twenty-eight million, five hundred eighty-two thousand, eight hundred fifty-five".