71116012 has 48 divisors (see below), whose sum is σ = 143902080. Its totient is φ = 30412800.

The previous prime is 71115997. The next prime is 71116021. The reversal of 71116012 is 21061117.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214687 + ... + 215017.

It is an arithmetic number, because the mean of its divisors is an integer number (2997960).

Almost surely, 2^71116012 is an apocalyptic number.

It is an amenable number.

71116012 is an abundant number, since it is smaller than the sum of its proper divisors (72786068).

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

71116012 is a wasteful number, since it uses less digits than its factorization.

71116012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 71116012 is about 8433.0310090738. The cubic root of 71116012 is about 414.3071848677.

Adding to 71116012 its reverse (21061117), we get a palindrome (92177129).

The spelling of 71116012 in words is "seventy-one million, one hundred sixteen thousand, twelve".