384530728 has 16 divisors (see below), whose sum is σ = 721248480. Its totient is φ = 192197808.

The previous prime is 384530717. The next prime is 384530743. The reversal of 384530728 is 827035483.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22351 + ... + 35617.

It is an arithmetic number, because the mean of its divisors is an integer number (45078030).

Almost surely, 2^384530728 is an apocalyptic number.

It is an amenable number.

384530728 is a deficient number, since it is larger than the sum of its proper divisors (336717752).

384530728 is a wasteful number, since it uses less digits than its factorization.

384530728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16896 (or 16892 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 384530728 is about 19609.4550663704. The cubic root of 384530728 is about 727.1829429731.

The spelling of 384530728 in words is "three hundred eighty-four million, five hundred thirty thousand, seven hundred twenty-eight".