111839120 has 20 divisors (see below), whose sum is σ = 260026140. Its totient is φ = 44735616.

The previous prime is 111839113. The next prime is 111839131. The reversal of 111839120 is 21938111.

It can be written as a sum of positive squares in 2 ways, for example, as 73547776 + 38291344 = 8576^2 + 6188^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 111839120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698915 + ... + 699074.

It is an arithmetic number, because the mean of its divisors is an integer number (13001307).

Almost surely, 2^111839120 is an apocalyptic number.

111839120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111839120 is an abundant number, since it is smaller than the sum of its proper divisors (148187020).

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

111839120 is a wasteful number, since it uses less digits than its factorization.

111839120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398002 (or 1397996 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 111839120 is about 10575.4016472189. The cubic root of 111839120 is about 481.7975424237.

The spelling of 111839120 in words is "one hundred eleven million, eight hundred thirty-nine thousand, one hundred twenty".