1115256 has 32 divisors (see below), whose sum is σ = 2880000. Its totient is φ = 359520.

The previous prime is 1115239. The next prime is 1115267. The reversal of 1115256 is 6525111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6 + ... + 1493.

It is an arithmetic number, because the mean of its divisors is an integer number (90000).

2^1115256 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 1115256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440000).

1115256 is an abundant number, since it is smaller than the sum of its proper divisors (1764744).

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

1115256 is a wasteful number, since it uses less digits than its factorization.

1115256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539 (or 1535 counting only the distinct ones).

The product of its digits is 300, while the sum is 21.

The square root of 1115256 is about 1056.0568166533. The cubic root of 1115256 is about 103.7030483834.

The spelling of 1115256 in words is "one million, one hundred fifteen thousand, two hundred fifty-six".