111828080 has 80 divisors (see below), whose sum is σ = 320021184. Its totient is φ = 35389440.

The previous prime is 111828071. The next prime is 111828083. The reversal of 111828080 is 80828111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111828083) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 401 + ... + 14960.

Almost surely, 2^111828080 is an apocalyptic number.

111828080 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 111828080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160010592).

111828080 is an abundant number, since it is smaller than the sum of its proper divisors (208193104).

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

111828080 is a wasteful number, since it uses less digits than its factorization.

111828080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15394 (or 15388 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 29.

The square root of 111828080 is about 10574.8796683461. The cubic root of 111828080 is about 481.7816886392.

The spelling of 111828080 in words is "one hundred eleven million, eight hundred twenty-eight thousand, eighty".