111344420 has 48 divisors (see below), whose sum is σ = 257656896. Its totient is φ = 40080000.

The previous prime is 111344413. The next prime is 111344447. The reversal of 111344420 is 24443111.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111344392 and 111344401.

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, 19715 + ... + 24725.

It is an arithmetic number, because the mean of its divisors is an integer number (5367852).

Almost surely, 2^111344420 is an apocalyptic number.

111344420 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 111344420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128828448).

111344420 is an abundant number, since it is smaller than the sum of its proper divisors (146312476).

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

111344420 is a wasteful number, since it uses less digits than its factorization.

111344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132 (or 5130 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 111344420 is about 10551.9865428269. The cubic root of 111344420 is about 481.0861111702.

Adding to 111344420 its reverse (24443111), we get a palindrome (135787531).

It can be divided in two parts, 11 and 1344420, that added together give a palindrome (1344431).

The spelling of 111344420 in words is "one hundred eleven million, three hundred forty-four thousand, four hundred twenty".