71730448 has 40 divisors (see below), whose sum is σ = 142062336. Its totient is φ = 35078400.

The previous prime is 71730437. The next prime is 71730469. The reversal of 71730448 is 84403717.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

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, 264553 + ... + 264823.

Almost surely, 2^71730448 is an apocalyptic number.

It is an amenable number.

71730448 is a deficient number, since it is larger than the sum of its proper divisors (70331888).

71730448 is a wasteful number, since it uses less digits than its factorization.

71730448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 71730448 is about 8469.3829763449. The cubic root of 71730448 is about 415.4969572825.

The spelling of 71730448 in words is "seventy-one million, seven hundred thirty thousand, four hundred forty-eight".