71444412 has 54 divisors (see below), whose sum is σ = 195572832. Its totient is φ = 21981024.

The previous prime is 71444407. The next prime is 71444419. The reversal of 71444412 is 21444417.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71444419) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 213 + ... + 11955.

Almost surely, 2^71444412 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 71444412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97786416).

71444412 is an abundant number, since it is smaller than the sum of its proper divisors (124128420).

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

71444412 is a wasteful number, since it uses less digits than its factorization.

71444412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11779 (or 11761 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 71444412 is about 8452.4796361778. The cubic root of 71444412 is about 414.9439359112.

Adding to 71444412 its reverse (21444417), we get a palindrome (92888829).

The spelling of 71444412 in words is "seventy-one million, four hundred forty-four thousand, four hundred twelve".