71144752 has 60 divisors (see below), whose sum is σ = 163026768. Its totient is φ = 29462400.

The previous prime is 71144729. The next prime is 71144761. The reversal of 71144752 is 25744117.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107302 + ... + 107962.

Almost surely, 2^71144752 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 71144752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81513384).

71144752 is an abundant number, since it is smaller than the sum of its proper divisors (91882016).

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

71144752 is a wasteful number, since it uses less digits than its factorization.

71144752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 701 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 71144752 is about 8434.7348506044. The cubic root of 71144752 is about 414.3629884507.

Adding to 71144752 its reverse (25744117), we get a palindrome (96888869).

The spelling of 71144752 in words is "seventy-one million, one hundred forty-four thousand, seven hundred fifty-two".