71330730 has 32 divisors (see below), whose sum is σ = 171849600. Its totient is φ = 18948672.

The previous prime is 71330729. The next prime is 71330737. The reversal of 71330730 is 3703317.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71330730.

It is not an unprimeable number, because it can be changed into a prime (71330737) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3651 + ... + 12489.

It is an arithmetic number, because the mean of its divisors is an integer number (5370300).

Almost surely, 2^71330730 is an apocalyptic number.

71330730 is an abundant number, since it is smaller than the sum of its proper divisors (100518870).

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

71330730 is a wasteful number, since it uses less digits than its factorization.

71330730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9118.

The product of its (nonzero) digits is 1323, while the sum is 24.

The square root of 71330730 is about 8445.7521867504. The cubic root of 71330730 is about 414.7237334857.

The spelling of 71330730 in words is "seventy-one million, three hundred thirty thousand, seven hundred thirty".