384778036 has 24 divisors (see below), whose sum is σ = 686153160. Its totient is φ = 188762112.

The previous prime is 384778021. The next prime is 384778081. The reversal of 384778036 is 630877483.

It can be written as a sum of positive squares in 4 ways, for example, as 247747600 + 137030436 = 15740^2 + 11706^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54180 + ... + 60868.

It is an arithmetic number, because the mean of its divisors is an integer number (28589715).

Almost surely, 2^384778036 is an apocalyptic number.

It is an amenable number.

384778036 is a deficient number, since it is larger than the sum of its proper divisors (301375124).

384778036 is a wasteful number, since it uses less digits than its factorization.

384778036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963 (or 6961 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 384778036 is about 19615.7598884163. The cubic root of 384778036 is about 727.3388036158.

The spelling of 384778036 in words is "three hundred eighty-four million, seven hundred seventy-eight thousand, thirty-six".