1156827456 has 84 divisors (see below), whose sum is σ = 3328521664. Its totient is φ = 384134400.

The previous prime is 1156827433. The next prime is 1156827467. The reversal of 1156827456 is 6547286511.

1156827456 is a `hidden beast` number, since 11 + 568 + 2 + 74 + 5 + 6 = 666.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 152391 + ... + 159801.

Almost surely, 2^1156827456 is an apocalyptic number.

1156827456 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 1156827456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1664260832).

1156827456 is an abundant number, since it is smaller than the sum of its proper divisors (2171694208).

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

1156827456 is a wasteful number, since it uses less digits than its factorization.

1156827456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7700 (or 7687 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 1156827456 is about 34012.1662938426. The cubic root of 1156827456 is about 1049.7588126302.

The spelling of 1156827456 in words is "one billion, one hundred fifty-six million, eight hundred twenty-seven thousand, four hundred fifty-six".