384878656 has 14 divisors (see below), whose sum is σ = 763743710. Its totient is φ = 192439296.

The previous prime is 384878651. The next prime is 384878693. The reversal of 384878656 is 656878483.

It can be written as a sum of positive squares in only one way, i.e., 383533056 + 1345600 = 19584^2 + 1160^2 .

It is a junction number, because it is equal to n+sod(n) for n = 384878597 and 384878606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384878651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3006801 + ... + 3006928.

Almost surely, 2^384878656 is an apocalyptic number.

It is an amenable number.

384878656 is a deficient number, since it is larger than the sum of its proper divisors (378865054).

384878656 is an equidigital number, since it uses as much as digits as its factorization.

384878656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6013741 (or 6013731 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 55.

The square root of 384878656 is about 19618.3244952264. The cubic root of 384878656 is about 727.4021981317.

The spelling of 384878656 in words is "three hundred eighty-four million, eight hundred seventy-eight thousand, six hundred fifty-six".