71730528 has 48 divisors (see below), whose sum is σ = 194374656. Its totient is φ = 23137920.

The previous prime is 71730473. The next prime is 71730541. The reversal of 71730528 is 82503717.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9076 + ... + 15027.

It is an arithmetic number, because the mean of its divisors is an integer number (4049472).

Almost surely, 2^71730528 is an apocalyptic number.

It is an amenable number.

71730528 is an abundant number, since it is smaller than the sum of its proper divisors (122644128).

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

71730528 is a wasteful number, since it uses less digits than its factorization.

71730528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24147 (or 24139 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 71730528 is about 8469.3876992378. The cubic root of 71730528 is about 415.4971117485.

The spelling of 71730528 in words is "seventy-one million, seven hundred thirty thousand, five hundred twenty-eight".