71881152 has 112 divisors (see below), whose sum is σ = 220431360. Its totient is φ = 20247552.

The previous prime is 71881133. The next prime is 71881177. The reversal of 71881152 is 25118817.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105838 + ... + 106514.

Almost surely, 2^71881152 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 71881152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110215680).

71881152 is an abundant number, since it is smaller than the sum of its proper divisors (148550208).

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

71881152 is a wasteful number, since it uses less digits than its factorization.

71881152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 768 counting only the distinct ones).

The product of its digits is 4480, while the sum is 33.

The square root of 71881152 is about 8478.2752963088. The cubic root of 71881152 is about 415.7877368793.

Adding to 71881152 its reverse (25118817), we get a palindrome (96999969).

The spelling of 71881152 in words is "seventy-one million, eight hundred eighty-one thousand, one hundred fifty-two".