71319612 has 96 divisors (see below), whose sum is σ = 206424064. Its totient is φ = 18662400.

The previous prime is 71319601. The next prime is 71319617. The reversal of 71319612 is 21691317.

It is a self number, because there is not a number n which added to its sum of digits gives 71319612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71319617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263037 + ... + 263307.

Almost surely, 2^71319612 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 71319612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103212032).

71319612 is an abundant number, since it is smaller than the sum of its proper divisors (135104452).

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

71319612 is a wasteful number, since it uses less digits than its factorization.

71319612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 537 counting only the distinct ones).

The product of its digits is 2268, while the sum is 30.

The square root of 71319612 is about 8445.0939604009. The cubic root of 71319612 is about 414.7021853252.

The spelling of 71319612 in words is "seventy-one million, three hundred nineteen thousand, six hundred twelve".