384642786 has 24 divisors (see below), whose sum is σ = 845579952. Its totient is φ = 116558200.

The previous prime is 384642763. The next prime is 384642793. The reversal of 384642786 is 687246483.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 264180 + ... + 265631.

It is an arithmetic number, because the mean of its divisors is an integer number (35232498).

Almost surely, 2^384642786 is an apocalyptic number.

384642786 is an abundant number, since it is smaller than the sum of its proper divisors (460937166).

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

384642786 is a wasteful number, since it uses less digits than its factorization.

384642786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529838 (or 529827 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 48.

The square root of 384642786 is about 19612.3121023504. The cubic root of 384642786 is about 727.2535734378.

The spelling of 384642786 in words is "three hundred eighty-four million, six hundred forty-two thousand, seven hundred eighty-six".