384655728 has 40 divisors (see below), whose sum is σ = 994396176. Its totient is φ = 128128000.

The previous prime is 384655723. The next prime is 384655757. The reversal of 384655728 is 827556483.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384655723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133018 + ... + 135878.

Almost surely, 2^384655728 is an apocalyptic number.

It is an amenable number.

384655728 is an abundant number, since it is smaller than the sum of its proper divisors (609740448).

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

384655728 is a wasteful number, since it uses less digits than its factorization.

384655728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673 (or 5667 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 48.

The square root of 384655728 is about 19612.6420453747. The cubic root of 384655728 is about 727.2617299322.

The spelling of 384655728 in words is "three hundred eighty-four million, six hundred fifty-five thousand, seven hundred twenty-eight".