384428506 has 32 divisors (see below), whose sum is σ = 729077760. Its totient is φ = 147663600.

The previous prime is 384428477. The next prime is 384428533. The reversal of 384428506 is 605824483.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6646 + ... + 28513.

It is an arithmetic number, because the mean of its divisors is an integer number (22783680).

Almost surely, 2^384428506 is an apocalyptic number.

384428506 is a deficient number, since it is larger than the sum of its proper divisors (344649254).

384428506 is a wasteful number, since it uses less digits than its factorization.

384428506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35250.

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 384428506 is about 19606.8484463975. The cubic root of 384428506 is about 727.1185001971.

The spelling of 384428506 in words is "three hundred eighty-four million, four hundred twenty-eight thousand, five hundred six".