1166212256 has 48 divisors (see below), whose sum is σ = 2529582048. Its totient is φ = 524832000.

The previous prime is 1166212249. The next prime is 1166212277. The reversal of 1166212256 is 6522126611.

It is a Harshad number since it is a multiple of its sum of digits (32).

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 7 ways as a sum of consecutive naturals, for example, 19151 + ... + 51953.

It is an arithmetic number, because the mean of its divisors is an integer number (52699626).

Almost surely, 2^1166212256 is an apocalyptic number.

1166212256 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 1166212256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264791024).

1166212256 is an abundant number, since it is smaller than the sum of its proper divisors (1363369792).

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

1166212256 is a wasteful number, since it uses less digits than its factorization.

1166212256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32925 (or 32917 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 1166212256 is about 34149.8500143119. The cubic root of 1166212256 is about 1052.5899046617.

Adding to 1166212256 its reverse (6522126611), we get a palindrome (7688338867).

The spelling of 1166212256 in words is "one billion, one hundred sixty-six million, two hundred twelve thousand, two hundred fifty-six".