71671332 has 12 divisors (see below), whose sum is σ = 167233136. Its totient is φ = 23890440.

The previous prime is 71671309. The next prime is 71671351. The reversal of 71671332 is 23317617.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 71671332.

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 3 ways as a sum of consecutive naturals, for example, 2986294 + ... + 2986317.

Almost surely, 2^71671332 is an apocalyptic number.

It is an amenable number.

71671332 is an abundant number, since it is smaller than the sum of its proper divisors (95561804).

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

71671332 is a wasteful number, since it uses less digits than its factorization.

71671332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972618 (or 5972616 counting only the distinct ones).

The product of its digits is 5292, while the sum is 30.

The square root of 71671332 is about 8465.8922742969. The cubic root of 71671332 is about 415.3827832250.

Adding to 71671332 its reverse (23317617), we get a palindrome (94988949).

The spelling of 71671332 in words is "seventy-one million, six hundred seventy-one thousand, three hundred thirty-two".