71512116 has 48 divisors (see below), whose sum is σ = 180238464. Its totient is φ = 21937536.

The previous prime is 71512093. The next prime is 71512117. The reversal of 71512116 is 61121517.

It is a super-2 number, since 2×71512116² = 10227965469594912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71512117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86481 + ... + 87303.

It is an arithmetic number, because the mean of its divisors is an integer number (3754968).

Almost surely, 2^71512116 is an apocalyptic number.

It is an amenable number.

71512116 is an abundant number, since it is smaller than the sum of its proper divisors (108726348).

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

71512116 is a wasteful number, since it uses less digits than its factorization.

71512116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1398 counting only the distinct ones).

The product of its digits is 420, while the sum is 24.

The square root of 71512116 is about 8456.4836663947. The cubic root of 71512116 is about 415.0749678279.

The spelling of 71512116 in words is "seventy-one million, five hundred twelve thousand, one hundred sixteen".