1256448 has 44 divisors (see below), whose sum is σ = 3357080. Its totient is φ = 417792.

The previous prime is 1256429. The next prime is 1256449. The reversal of 1256448 is 8446521.

It is not an unprimeable number, because it can be changed into a prime (1256449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2868 + ... + 3276.

2^1256448 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 1256448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1678540).

1256448 is an abundant number, since it is smaller than the sum of its proper divisors (2100632).

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

1256448 is an equidigital number, since it uses as much as digits as its factorization.

1256448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 414 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 1256448 is about 1120.9139128408. The cubic root of 1256448 is about 107.9066408566.

The spelling of 1256448 in words is "one million, two hundred fifty-six thousand, four hundred forty-eight".