111899892 has 72 divisors (see below), whose sum is σ = 296911776. Its totient is φ = 32602176.

The previous prime is 111899891. The next prime is 111899939. The reversal of 111899892 is 298998111.

It is a super-2 number, since 2×111899892² = 25043171659223328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111899891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55323 + ... + 57309.

Almost surely, 2^111899892 is an apocalyptic number.

111899892 is a gapful number since it is divisible by the number (12) 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 111899892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148455888).

111899892 is an abundant number, since it is smaller than the sum of its proper divisors (185011884).

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

111899892 is a wasteful number, since it uses less digits than its factorization.

111899892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 2024 counting only the distinct ones).

The product of its digits is 93312, while the sum is 48.

The square root of 111899892 is about 10578.2745284853. The cubic root of 111899892 is about 481.8847942381.

The spelling of 111899892 in words is "one hundred eleven million, eight hundred ninety-nine thousand, eight hundred ninety-two".