1256528 has 40 divisors (see below), whose sum is σ = 2999808. Its totient is φ = 496512.

The previous prime is 1256477. The next prime is 1256531. The reversal of 1256528 is 8256521.

It is a super-2 number, since 2×1256528² = 3157725229568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1256528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025 + ... + 1887.

2^1256528 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 1256528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499904).

1256528 is an abundant number, since it is smaller than the sum of its proper divisors (1743280).

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

1256528 is a wasteful number, since it uses less digits than its factorization.

1256528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 885 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 1256528 is about 1120.9495974396. The cubic root of 1256528 is about 107.9089310025.

The spelling of 1256528 in words is "one million, two hundred fifty-six thousand, five hundred twenty-eight".