111343920 has 120 divisors (see below), whose sum is σ = 361237296. Its totient is φ = 28368384.

The previous prime is 111343901. The next prime is 111343949. The reversal of 111343920 is 29343111.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126522 + ... + 127398.

Almost surely, 2^111343920 is an apocalyptic number.

111343920 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 111343920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180618648).

111343920 is an abundant number, since it is smaller than the sum of its proper divisors (249893376).

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

111343920 is a wasteful number, since it uses less digits than its factorization.

111343920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 111343920 is about 10551.9628505790. The cubic root of 111343920 is about 481.0853910520.

The spelling of 111343920 in words is "one hundred eleven million, three hundred forty-three thousand, nine hundred twenty".