111903660 has 96 divisors (see below), whose sum is σ = 379814400. Its totient is φ = 27126720.

The previous prime is 111903643. The next prime is 111903667. The reversal of 111903660 is 66309111.

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

It is not an unprimeable number, because it can be changed into a prime (111903667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3480 + ... + 15359.

It is an arithmetic number, because the mean of its divisors is an integer number (3956400).

Almost surely, 2^111903660 is an apocalyptic number.

111903660 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 111903660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189907200).

111903660 is an abundant number, since it is smaller than the sum of its proper divisors (267910740).

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

111903660 is a wasteful number, since it uses less digits than its factorization.

111903660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18868 (or 18860 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 111903660 is about 10578.4526278658. The cubic root of 111903660 is about 481.8902030056.

The spelling of 111903660 in words is "one hundred eleven million, nine hundred three thousand, six hundred sixty".