71512716 has 24 divisors (see below), whose sum is σ = 182032704. Its totient is φ = 21670480.

The previous prime is 71512711. The next prime is 71512723. The reversal of 71512716 is 61721517.

It is a super-2 number, since 2×71512716² = 10228137099393312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71512711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270750 + ... + 271013.

It is an arithmetic number, because the mean of its divisors is an integer number (7584696).

Almost surely, 2^71512716 is an apocalyptic number.

It is an amenable number.

71512716 is an abundant number, since it is smaller than the sum of its proper divisors (110519988).

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

71512716 is a wasteful number, since it uses less digits than its factorization.

71512716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541781 (or 541779 counting only the distinct ones).

The product of its digits is 2940, while the sum is 30.

The square root of 71512716 is about 8456.5191420584. The cubic root of 71512716 is about 415.0761286768.

It can be divided in two parts, 715 and 12716, that added together give a palindrome (13431).

The spelling of 71512716 in words is "seventy-one million, five hundred twelve thousand, seven hundred sixteen".