71112072 has 32 divisors (see below), whose sum is σ = 177994080. Its totient is φ = 23675520.

The previous prime is 71112049. The next prime is 71112073. The reversal of 71112072 is 27021117.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71112073) 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 7 ways as a sum of consecutive naturals, for example, 30583 + ... + 32825.

It is an arithmetic number, because the mean of its divisors is an integer number (5562315).

Almost surely, 2^71112072 is an apocalyptic number.

It is an amenable number.

71112072 is an abundant number, since it is smaller than the sum of its proper divisors (106882008).

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

71112072 is a wasteful number, since it uses less digits than its factorization.

71112072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573 (or 3569 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 71112072 is about 8432.7974006257. The cubic root of 71112072 is about 414.2995335179.

Adding to 71112072 its reverse (27021117), we get a palindrome (98133189).

The spelling of 71112072 in words is "seventy-one million, one hundred twelve thousand, seventy-two".