112297128 has 64 divisors (see below), whose sum is σ = 292032000. Its totient is φ = 35946240.

The previous prime is 112297117. The next prime is 112297139. The reversal of 112297128 is 821792211.

It is an interprime number because it is at equal distance from previous prime (112297117) and next prime (112297139).

It is a super-2 number, since 2×112297128² = 25221289914096768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110350 + ... + 111362.

It is an arithmetic number, because the mean of its divisors is an integer number (4563000).

Almost surely, 2^112297128 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 112297128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146016000).

112297128 is an abundant number, since it is smaller than the sum of its proper divisors (179734872).

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

112297128 is a wasteful number, since it uses less digits than its factorization.

112297128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202 (or 1198 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 112297128 is about 10597.0339246414. The cubic root of 112297128 is about 482.4543387934.

The spelling of 112297128 in words is "one hundred twelve million, two hundred ninety-seven thousand, one hundred twenty-eight".