1156436256 has 96 divisors (see below), whose sum is σ = 3113728128. Its totient is φ = 375664640.

The previous prime is 1156436249. The next prime is 1156436321. The reversal of 1156436256 is 6526346511.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849016 + ... + 850376.

It is an arithmetic number, because the mean of its divisors is an integer number (32434668).

Almost surely, 2^1156436256 is an apocalyptic number.

1156436256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156436256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556864064).

1156436256 is an abundant number, since it is smaller than the sum of its proper divisors (1957291872).

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

1156436256 is a wasteful number, since it uses less digits than its factorization.

1156436256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1586 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 1156436256 is about 34006.4149242463. The cubic root of 1156436256 is about 1049.6404682896.

The spelling of 1156436256 in words is "one billion, one hundred fifty-six million, four hundred thirty-six thousand, two hundred fifty-six".