384720680 has 16 divisors (see below), whose sum is σ = 865621620. Its totient is φ = 153888256.

The previous prime is 384720673. The next prime is 384720689. The reversal of 384720680 is 86027483.

It can be written as a sum of positive squares in 2 ways, for example, as 367795684 + 16924996 = 19178^2 + 4114^2 .

It is not an unprimeable number, because it can be changed into a prime (384720689) 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 3 ways as a sum of consecutive naturals, for example, 4808969 + ... + 4809048.

Almost surely, 2^384720680 is an apocalyptic number.

It is an amenable number.

384720680 is an abundant number, since it is smaller than the sum of its proper divisors (480900940).

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

384720680 is a wasteful number, since it uses less digits than its factorization.

384720680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9618028 (or 9618024 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 384720680 is about 19614.2978462141. The cubic root of 384720680 is about 727.3026621580.

The spelling of 384720680 in words is "three hundred eighty-four million, seven hundred twenty thousand, six hundred eighty".