71256852 has 72 divisors (see below), whose sum is σ = 192628800. Its totient is φ = 22154880.

The previous prime is 71256847. The next prime is 71256863. The reversal of 71256852 is 25865217.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 32899 + ... + 34997.

It is an arithmetic number, because the mean of its divisors is an integer number (2675400).

Almost surely, 2^71256852 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 71256852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96314400).

71256852 is an abundant number, since it is smaller than the sum of its proper divisors (121371948).

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

71256852 is a wasteful number, since it uses less digits than its factorization.

71256852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173 (or 2168 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 71256852 is about 8441.3773757604. The cubic root of 71256852 is about 414.5805060914.

The spelling of 71256852 in words is "seventy-one million, two hundred fifty-six thousand, eight hundred fifty-two".