111891052 has 48 divisors (see below), whose sum is σ = 243557440. Its totient is φ = 43794432.

The previous prime is 111891041. The next prime is 111891053. The reversal of 111891052 is 250198111.

111891052 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

111891052 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 111891052.

It is not an unprimeable number, because it can be changed into a prime (111891053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33724 + ... + 36892.

Almost surely, 2^111891052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111891052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121778720).

111891052 is an abundant number, since it is smaller than the sum of its proper divisors (131666388).

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

111891052 is a wasteful number, since it uses less digits than its factorization.

111891052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290 (or 3288 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 28.

The square root of 111891052 is about 10577.8566827122. The cubic root of 111891052 is about 481.8721044023.

The spelling of 111891052 in words is "one hundred eleven million, eight hundred ninety-one thousand, fifty-two".