71347072 has 32 divisors (see below), whose sum is σ = 142902000. Its totient is φ = 35481600.

The previous prime is 71347069. The next prime is 71347097. The reversal of 71347072 is 27074317.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24072 + ... + 26872.

Almost surely, 2^71347072 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 71347072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71451000).

71347072 is an abundant number, since it is smaller than the sum of its proper divisors (71554928).

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

71347072 is a wasteful number, since it uses less digits than its factorization.

71347072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014 (or 3002 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 71347072 is about 8446.7195999394. The cubic root of 71347072 is about 414.7554023879.

The spelling of 71347072 in words is "seventy-one million, three hundred forty-seven thousand, seventy-two".