1256364 has 24 divisors (see below), whose sum is σ = 3257520. Its totient is φ = 418752.

The previous prime is 1256347. The next prime is 1256369. The reversal of 1256364 is 4636521.

1256364 is a `hidden beast` number, since 1 + 25 + 636 + 4 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1256369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5709 + ... + 5924.

It is an arithmetic number, because the mean of its divisors is an integer number (135730).

2^1256364 is an apocalyptic number.

It is an amenable number.

1256364 is an abundant number, since it is smaller than the sum of its proper divisors (2001156).

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

1256364 is a wasteful number, since it uses less digits than its factorization.

1256364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11646 (or 11638 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1256364 is about 1120.8764427893. The cubic root of 1256364 is about 107.9042360986.

The spelling of 1256364 in words is "one million, two hundred fifty-six thousand, three hundred sixty-four".