389027820 has 48 divisors (see below), whose sum is σ = 1093044960. Its totient is φ = 103382016.

The previous prime is 389027809. The next prime is 389027827. The reversal of 389027820 is 28720983.

It is not an unprimeable number, because it can be changed into a prime (389027827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6516 + ... + 28644.

It is an arithmetic number, because the mean of its divisors is an integer number (22771770).

Almost surely, 2^389027820 is an apocalyptic number.

389027820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

389027820 is an abundant number, since it is smaller than the sum of its proper divisors (704017140).

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

389027820 is a wasteful number, since it uses less digits than its factorization.

389027820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22434 (or 22432 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 389027820 is about 19723.7881757030. The cubic root of 389027820 is about 730.0067679363.

The spelling of 389027820 in words is "three hundred eighty-nine million, twenty-seven thousand, eight hundred twenty".