1256328 has 24 divisors (see below), whose sum is σ = 3402750. Its totient is φ = 418752.

The previous prime is 1256323. The next prime is 1256347. The reversal of 1256328 is 8236521.

1256328 is a `hidden beast` number, since 1 + 25 + 632 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 675684 + 580644 = 822^2 + 762^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (1256323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8653 + ... + 8796.

2^1256328 is an apocalyptic number.

1256328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1256328 is an abundant number, since it is smaller than the sum of its proper divisors (2146422).

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

1256328 is a wasteful number, since it uses less digits than its factorization.

1256328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17461 (or 17454 counting only the distinct ones).

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

The square root of 1256328 is about 1120.8603838124. The cubic root of 1256328 is about 107.9032054553.

The spelling of 1256328 in words is "one million, two hundred fifty-six thousand, three hundred twenty-eight".