71272852 has 36 divisors (see below), whose sum is σ = 146959680. Its totient is φ = 30152304.

The previous prime is 71272849. The next prime is 71272867. The reversal of 71272852 is 25827217.

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 11 ways as a sum of consecutive naturals, for example, 13183 + ... + 17785.

Almost surely, 2^71272852 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 71272852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73479840).

71272852 is an abundant number, since it is smaller than the sum of its proper divisors (75686828).

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

71272852 is a wasteful number, since it uses less digits than its factorization.

71272852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4700 (or 4691 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The square root of 71272852 is about 8442.3250352021. The cubic root of 71272852 is about 414.6115337119.

The spelling of 71272852 in words is "seventy-one million, two hundred seventy-two thousand, eight hundred fifty-two".