385424506 has 12 divisors (see below), whose sum is σ = 580826106. Its totient is φ = 191817720.

The previous prime is 385424497. The next prime is 385424509. The reversal of 385424506 is 605424583.

It can be written as a sum of positive squares in only one way, i.e., 237437281 + 147987225 = 15409^2 + 12165^2 .

It is not an unprimeable number, because it can be changed into a prime (385424509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 474841 + ... + 475651.

Almost surely, 2^385424506 is an apocalyptic number.

385424506 is a deficient number, since it is larger than the sum of its proper divisors (195401600).

385424506 is an frugal number, since it uses more digits than its factorization.

385424506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 385424506 is about 19632.2313046684. The cubic root of 385424506 is about 727.7459124655.

The spelling of 385424506 in words is "three hundred eighty-five million, four hundred twenty-four thousand, five hundred six".