1166432256 has 216 divisors, whose sum is σ = 3710053620. Its totient is φ = 352788480.

The previous prime is 1166432231. The next prime is 1166432269. The reversal of 1166432256 is 6522346611.

1166432256 is a `hidden beast` number, since 1 + 1 + 6 + 643 + 2 + 2 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1166432256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2230011 + ... + 2230533.

Almost surely, 2^1166432256 is an apocalyptic number.

1166432256 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 1166432256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1855026810).

1166432256 is an abundant number, since it is smaller than the sum of its proper divisors (2543621364).

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

1166432256 is a wasteful number, since it uses less digits than its factorization.

1166432256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 539 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1166432256 is about 34153.0709600176. The cubic root of 1166432256 is about 1052.6560890742.

Adding to 1166432256 its reverse (6522346611), we get a palindrome (7688778867).

The spelling of 1166432256 in words is "one billion, one hundred sixty-six million, four hundred thirty-two thousand, two hundred fifty-six".