71530688 has 28 divisors (see below), whose sum is σ = 142643352. Its totient is φ = 35589120.

The previous prime is 71530681. The next prime is 71530717. The reversal of 71530688 is 88603517.

It is not an unprimeable number, because it can be changed into a prime (71530681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10856 + ... + 16152.

Almost surely, 2^71530688 is an apocalyptic number.

It is an amenable number.

71530688 is a deficient number, since it is larger than the sum of its proper divisors (71112664).

71530688 is a wasteful number, since it uses less digits than its factorization.

71530688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520 (or 5510 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 71530688 is about 8457.5816874565. The cubic root of 71530688 is about 415.1108969613.

The spelling of 71530688 in words is "seventy-one million, five hundred thirty thousand, six hundred eighty-eight".