71162112 has 216 divisors, whose sum is σ = 231151872. Its totient is φ = 19353600.

The previous prime is 71162111. The next prime is 71162123. The reversal of 71162112 is 21126117.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is not an unprimeable number, because it can be changed into a prime (71162111) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1166562 + ... + 1166622.

Almost surely, 2^71162112 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 71162112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115575936).

71162112 is an abundant number, since it is smaller than the sum of its proper divisors (159989760).

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

71162112 is a wasteful number, since it uses less digits than its factorization.

71162112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 104 counting only the distinct ones).

The product of its digits is 168, while the sum is 21.

The square root of 71162112 is about 8435.7638658274. The cubic root of 71162112 is about 414.3966885540.

Adding to 71162112 its reverse (21126117), we get a palindrome (92288229).

The spelling of 71162112 in words is "seventy-one million, one hundred sixty-two thousand, one hundred twelve".