71880132 has 24 divisors (see below), whose sum is σ = 167858656. Its totient is φ = 23940288.

The previous prime is 71880101. The next prime is 71880157. The reversal of 71880132 is 23108817.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71880132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24243 + ... + 27045.

Almost surely, 2^71880132 is an apocalyptic number.

It is an amenable number.

71880132 is an abundant number, since it is smaller than the sum of its proper divisors (95978524).

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

71880132 is a wasteful number, since it uses less digits than its factorization.

71880132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947 (or 4945 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 71880132 is about 8478.2151423516. The cubic root of 71880132 is about 415.7857701815.

Adding to 71880132 its reverse (23108817), we get a palindrome (94988949).

The spelling of 71880132 in words is "seventy-one million, eight hundred eighty thousand, one hundred thirty-two".