71303740 has 12 divisors (see below), whose sum is σ = 149737896. Its totient is φ = 28521488.

The previous prime is 71303731. The next prime is 71303753. The reversal of 71303740 is 4730317.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1782574 + ... + 1782613.

It is an arithmetic number, because the mean of its divisors is an integer number (12478158).

Almost surely, 2^71303740 is an apocalyptic number.

It is an amenable number.

71303740 is an abundant number, since it is smaller than the sum of its proper divisors (78434156).

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

71303740 is a wasteful number, since it uses less digits than its factorization.

71303740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565196 (or 3565194 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 71303740 is about 8444.1541909181. The cubic root of 71303740 is about 414.6714194006.

The spelling of 71303740 in words is "seventy-one million, three hundred three thousand, seven hundred forty".