3128256 has 42 divisors (see below), whose sum is σ = 8968232. Its totient is φ = 1042560.

The previous prime is 3128249. The next prime is 3128291. The reversal of 3128256 is 6528213.

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 5 ways as a sum of consecutive naturals, for example, 2140 + ... + 3291.

Almost surely, 2^3128256 is an apocalyptic number.

3128256 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3128256 is an abundant number, since it is smaller than the sum of its proper divisors (5839976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3128256 is a wasteful number, since it uses less digits than its factorization.

3128256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449 (or 5436 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 3128256 is about 1768.6876490777. The cubic root of 3128256 is about 146.2516458285.

The spelling of 3128256 in words is "three million, one hundred twenty-eight thousand, two hundred fifty-six".