389287680 has 72 divisors (see below), whose sum is σ = 1243299792. Its totient is φ = 103809024.

The previous prime is 389287663. The next prime is 389287733. The reversal of 389287680 is 86782983.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 46849 + ... + 54528.

Almost surely, 2^389287680 is an apocalyptic number.

389287680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

389287680 is an abundant number, since it is smaller than the sum of its proper divisors (854012112).

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

389287680 is a wasteful number, since it uses less digits than its factorization.

389287680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101401 (or 101387 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 389287680 is about 19730.3745529577. The cubic root of 389287680 is about 730.1692733121.

The spelling of 389287680 in words is "three hundred eighty-nine million, two hundred eighty-seven thousand, six hundred eighty".