1028235856 has 10 divisors (see below), whose sum is σ = 1992207002. Its totient is φ = 514117920.

The previous prime is 1028235821. The next prime is 1028235941. The reversal of 1028235856 is 6585328201.

It can be written as a sum of positive squares in only one way, i.e., 960008256 + 68227600 = 30984^2 + 8260^2 .

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 as a sum of consecutive naturals, namely, 32132355 + ... + 32132386.

Almost surely, 2^1028235856 is an apocalyptic number.

1028235856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1028235856 is a deficient number, since it is larger than the sum of its proper divisors (963971146).

1028235856 is an equidigital number, since it uses as much as digits as its factorization.

1028235856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64264749 (or 64264743 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1028235856 is about 32066.1169460850. The cubic root of 1028235856 is about 1009.3247311257.

The spelling of 1028235856 in words is "one billion, twenty-eight million, two hundred thirty-five thousand, eight hundred fifty-six".