111777940 has 24 divisors (see below), whose sum is σ = 242307072. Its totient is φ = 43268640.

The previous prime is 111777917. The next prime is 111777947. The reversal of 111777940 is 49777111.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 111777940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111777947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89524 + ... + 90763.

It is an arithmetic number, because the mean of its divisors is an integer number (10096128).

Almost surely, 2^111777940 is an apocalyptic number.

111777940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111777940 is an abundant number, since it is smaller than the sum of its proper divisors (130529132).

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

111777940 is a wasteful number, since it uses less digits than its factorization.

111777940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180327 (or 180325 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 37.

The square root of 111777940 is about 10572.5086899941. The cubic root of 111777940 is about 481.7096729013.

The spelling of 111777940 in words is "one hundred eleven million, seven hundred seventy-seven thousand, nine hundred forty".