71044072 has 64 divisors (see below), whose sum is σ = 150854400. Its totient is φ = 31088640.

The previous prime is 71044067. The next prime is 71044073. The reversal of 71044072 is 27044017.

It is not an unprimeable number, because it can be changed into a prime (71044073) 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, 368008 + ... + 368200.

It is an arithmetic number, because the mean of its divisors is an integer number (2357100).

Almost surely, 2^71044072 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 71044072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75427200).

71044072 is an abundant number, since it is smaller than the sum of its proper divisors (79810328).

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

71044072 is a wasteful number, since it uses less digits than its factorization.

71044072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 71044072 is about 8428.7645595307. The cubic root of 71044072 is about 414.1674352112.

Adding to 71044072 its reverse (27044017), we get a palindrome (98088089).

The spelling of 71044072 in words is "seventy-one million, forty-four thousand, seventy-two".