111839952 has 80 divisors (see below), whose sum is σ = 336982400. Its totient is φ = 31949568.

The previous prime is 111839941. The next prime is 111839977. The reversal of 111839952 is 259938111.

It is a self number, because there is not a number n which added to its sum of digits gives 111839952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13068 + ... + 19860.

It is an arithmetic number, because the mean of its divisors is an integer number (4212280).

Almost surely, 2^111839952 is an apocalyptic number.

111839952 is a gapful number since it is divisible by the number (12) 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 111839952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168491200).

111839952 is an abundant number, since it is smaller than the sum of its proper divisors (225142448).

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

111839952 is an equidigital number, since it uses as much as digits as its factorization.

111839952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825 (or 6805 counting only the distinct ones).

The product of its digits is 19440, while the sum is 39.

The square root of 111839952 is about 10575.4409837132. The cubic root of 111839952 is about 481.7987371593.

The spelling of 111839952 in words is "one hundred eleven million, eight hundred thirty-nine thousand, nine hundred fifty-two".