111940920 has 512 divisors, whose sum is σ = 493516800. Its totient is φ = 21897216.

The previous prime is 111940909. The next prime is 111940921. The reversal of 111940920 is 29049111.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111940921) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1670727 + ... + 1670793.

It is an arithmetic number, because the mean of its divisors is an integer number (963900).

Almost surely, 2^111940920 is an apocalyptic number.

111940920 is a gapful number since it is divisible by the number (10) 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 111940920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246758400).

111940920 is an abundant number, since it is smaller than the sum of its proper divisors (381575880).

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

111940920 is a wasteful number, since it uses less digits than its factorization.

111940920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 111940920 is about 10580.2136084297. The cubic root of 111940920 is about 481.9436812580.

The spelling of 111940920 in words is "one hundred eleven million, nine hundred forty thousand, nine hundred twenty".