1158256 has 20 divisors (see below), whose sum is σ = 2448504. Its totient is φ = 526400.

The previous prime is 1158251. The next prime is 1158263. The reversal of 1158256 is 6528511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158251) 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, 3115 + ... + 3466.

2^1158256 is an apocalyptic number.

1158256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1158256 is an abundant number, since it is smaller than the sum of its proper divisors (1290248).

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

1158256 is a wasteful number, since it uses less digits than its factorization.

1158256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6600 (or 6594 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The square root of 1158256 is about 1076.2230252136. The cubic root of 1158256 is about 105.0190743881.

The spelling of 1158256 in words is "one million, one hundred fifty-eight thousand, two hundred fifty-six".