111391392 has 96 divisors (see below), whose sum is σ = 348751872. Its totient is φ = 30438144.

The previous prime is 111391381. The next prime is 111391393. The reversal of 111391392 is 293193111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (111391393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11853 + ... + 19059.

It is an arithmetic number, because the mean of its divisors is an integer number (3632832).

Almost surely, 2^111391392 is an apocalyptic number.

111391392 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 111391392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174375936).

111391392 is an abundant number, since it is smaller than the sum of its proper divisors (237360480).

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

111391392 is a wasteful number, since it uses less digits than its factorization.

111391392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7250 (or 7242 counting only the distinct ones).

The product of its digits is 1458, while the sum is 30.

The square root of 111391392 is about 10554.2120501722. The cubic root of 111391392 is about 481.1537523382.

The spelling of 111391392 in words is "one hundred eleven million, three hundred ninety-one thousand, three hundred ninety-two".