71332140 has 48 divisors (see below), whose sum is σ = 217889280. Its totient is φ = 17292480.

The previous prime is 71332133. The next prime is 71332231. The reversal of 71332140 is 4123317.

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, 53380 + ... + 54699.

It is an arithmetic number, because the mean of its divisors is an integer number (4539360).

Almost surely, 2^71332140 is an apocalyptic number.

It is an amenable number.

71332140 is an abundant number, since it is smaller than the sum of its proper divisors (146557140).

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

71332140 is a wasteful number, since it uses less digits than its factorization.

71332140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108102 (or 108100 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 71332140 is about 8445.8356602529. The cubic root of 71332140 is about 414.7264660929.

Adding to 71332140 its reverse (4123317), we get a palindrome (75455457).

The spelling of 71332140 in words is "seventy-one million, three hundred thirty-two thousand, one hundred forty".