71247652 has 48 divisors (see below), whose sum is σ = 149587200. Its totient is φ = 29031552.

The previous prime is 71247643. The next prime is 71247653. The reversal of 71247652 is 25674217.

It is not an unprimeable number, because it can be changed into a prime (71247653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203974 + ... + 204322.

It is an arithmetic number, because the mean of its divisors is an integer number (3116400).

Almost surely, 2^71247652 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 71247652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74793600).

71247652 is an abundant number, since it is smaller than the sum of its proper divisors (78339548).

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

71247652 is a wasteful number, since it uses less digits than its factorization.

71247652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 698 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 71247652 is about 8440.8324234047. The cubic root of 71247652 is about 414.5626631064.

The spelling of 71247652 in words is "seventy-one million, two hundred forty-seven thousand, six hundred fifty-two".