71683530 has 16 divisors (see below), whose sum is σ = 172040544. Its totient is φ = 19115600.

The previous prime is 71683529. The next prime is 71683589. The reversal of 71683530 is 3538617.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71683491 and 71683500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194696 + ... + 1194755.

It is an arithmetic number, because the mean of its divisors is an integer number (10752534).

Almost surely, 2^71683530 is an apocalyptic number.

71683530 is an abundant number, since it is smaller than the sum of its proper divisors (100357014).

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

71683530 is a wasteful number, since it uses less digits than its factorization.

71683530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389461.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 71683530 is about 8466.6126638698. The cubic root of 71683530 is about 415.4063470481.

The spelling of 71683530 in words is "seventy-one million, six hundred eighty-three thousand, five hundred thirty".