112991872 has 32 divisors (see below), whose sum is σ = 257260320. Its totient is φ = 48424704.

The previous prime is 112991867. The next prime is 112991873. The reversal of 112991872 is 278199211.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (112991873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62158 + ... + 63949.

It is an arithmetic number, because the mean of its divisors is an integer number (8039385).

Almost surely, 2^112991872 is an apocalyptic number.

It is an amenable number.

112991872 is an abundant number, since it is smaller than the sum of its proper divisors (144268448).

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

112991872 is an equidigital number, since it uses as much as digits as its factorization.

112991872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126128 (or 126116 counting only the distinct ones).

The product of its digits is 18144, while the sum is 40.

The square root of 112991872 is about 10629.7634968987. The cubic root of 112991872 is about 483.4472208308.

The spelling of 112991872 in words is "one hundred twelve million, nine hundred ninety-one thousand, eight hundred seventy-two".