1256368 has 40 divisors (see below), whose sum is σ = 2678400. Its totient is φ = 568320.

The previous prime is 1256347. The next prime is 1256369. The reversal of 1256368 is 8636521.

It is a Harshad number since it is a multiple of its sum of digits (31).

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8358 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (66960).

2^1256368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1256368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339200).

1256368 is an abundant number, since it is smaller than the sum of its proper divisors (1422032).

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

1256368 is a wasteful number, since it uses less digits than its factorization.

1256368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 199 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 1256368 is about 1120.8782271059. The cubic root of 1256368 is about 107.9043506133.

The spelling of 1256368 in words is "one million, two hundred fifty-six thousand, three hundred sixty-eight".