111649856 has 28 divisors (see below), whose sum is σ = 222577152. Its totient is φ = 55567488.

The previous prime is 111649849. The next prime is 111649873. The reversal of 111649856 is 658946111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10361 + ... + 18183.

It is an arithmetic number, because the mean of its divisors is an integer number (7949184).

Almost surely, 2^111649856 is an apocalyptic number.

111649856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

111649856 is a deficient number, since it is larger than the sum of its proper divisors (110927296).

111649856 is an equidigital number, since it uses as much as digits as its factorization.

111649856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8058 (or 8048 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 111649856 is about 10566.4495456137. The cubic root of 111649856 is about 481.5256089038.

The spelling of 111649856 in words is "one hundred eleven million, six hundred forty-nine thousand, eight hundred fifty-six".