71471312 has 120 divisors (see below), whose sum is σ = 168218400. Its totient is φ = 29272320.

The previous prime is 71471303. The next prime is 71471329. The reversal of 71471312 is 21317417.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1066703 + ... + 1066769.

It is an arithmetic number, because the mean of its divisors is an integer number (1401820).

Almost surely, 2^71471312 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 71471312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84109200).

71471312 is an abundant number, since it is smaller than the sum of its proper divisors (96747088).

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

71471312 is a wasteful number, since it uses less digits than its factorization.

71471312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 128 counting only the distinct ones).

The product of its digits is 1176, while the sum is 26.

The square root of 71471312 is about 8454.0707354505. The cubic root of 71471312 is about 414.9960071228.

Adding to 71471312 its reverse (21317417), we get a palindrome (92788729).

The spelling of 71471312 in words is "seventy-one million, four hundred seventy-one thousand, three hundred twelve".