1156256 has 24 divisors (see below), whose sum is σ = 2376864. Its totient is φ = 552640.

The previous prime is 1156249. The next prime is 1156261. The reversal of 1156256 is 6526511.

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 3 ways as a sum of consecutive naturals, for example, 50 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (99036).

2^1156256 is an apocalyptic number.

1156256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1156256 is an abundant number, since it is smaller than the sum of its proper divisors (1220608).

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

1156256 is a wasteful number, since it uses less digits than its factorization.

1156256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 1596 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 1156256 is about 1075.2934483200. The cubic root of 1156256 is about 104.9585928946.

It can be divided in two parts, 1156 and 256, that multiplied together give a square (295936 = 544²).

The spelling of 1156256 in words is "one million, one hundred fifty-six thousand, two hundred fifty-six".