1028575855 has 8 divisors (see below), whose sum is σ = 1234572192. Its totient is φ = 822673248.

The previous prime is 1028575831. The next prime is 1028575903. The reversal of 1028575855 is 5585758201.

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 1028575855 - 2⁹ = 1028575343 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3537 + ... + 45493.

It is an arithmetic number, because the mean of its divisors is an integer number (154321524).

Almost surely, 2^1028575855 is an apocalyptic number.

1028575855 is a deficient number, since it is larger than the sum of its proper divisors (205996337).

1028575855 is an equidigital number, since it uses as much as digits as its factorization.

1028575855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46865.

The product of its (nonzero) digits is 560000, while the sum is 46.

The square root of 1028575855 is about 32071.4180384965. The cubic root of 1028575855 is about 1009.4359674664.

The spelling of 1028575855 in words is "one billion, twenty-eight million, five hundred seventy-five thousand, eight hundred fifty-five".