1181256 has 32 divisors (see below), whose sum is σ = 2993760. Its totient is φ = 388352.

The previous prime is 1181237. The next prime is 1181263. The reversal of 1181256 is 6521811.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1696 + ... + 2288.

It is an arithmetic number, because the mean of its divisors is an integer number (93555).

2^1181256 is an apocalyptic number.

It is an amenable number.

1181256 is an abundant number, since it is smaller than the sum of its proper divisors (1812504).

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

1181256 is a wasteful number, since it uses less digits than its factorization.

1181256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 681 counting only the distinct ones).

The product of its digits is 480, while the sum is 24.

The square root of 1181256 is about 1086.8560162229. The cubic root of 1181256 is about 105.7096599597.

The spelling of 1181256 in words is "one million, one hundred eighty-one thousand, two hundred fifty-six".