1028856355 has 24 divisors (see below), whose sum is σ = 1308478752. Its totient is φ = 775158912.

The previous prime is 1028856331. The next prime is 1028856359. The reversal of 1028856355 is 5536588201.

1028856355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1028856355 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028856359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 515239 + ... + 517231.

It is an arithmetic number, because the mean of its divisors is an integer number (54519948).

Almost surely, 2^1028856355 is an apocalyptic number.

1028856355 is a deficient number, since it is larger than the sum of its proper divisors (279622397).

1028856355 is an equidigital number, since it uses as much as digits as its factorization.

1028856355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155 (or 2088 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 43.

The square root of 1028856355 is about 32075.7907930576. The cubic root of 1028856355 is about 1009.5277192650.

The spelling of 1028856355 in words is "one billion, twenty-eight million, eight hundred fifty-six thousand, three hundred fifty-five".