389920288 has 48 divisors (see below), whose sum is σ = 803307456. Its totient is φ = 185954560.

The previous prime is 389920277. The next prime is 389920301. The reversal of 389920288 is 882029983.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413898 + ... + 414838.

It is an arithmetic number, because the mean of its divisors is an integer number (16735572).

Almost surely, 2^389920288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389920288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401653728).

389920288 is an abundant number, since it is smaller than the sum of its proper divisors (413387168).

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

389920288 is a wasteful number, since it uses less digits than its factorization.

389920288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 389920288 is about 19746.3993679861. The cubic root of 389920288 is about 730.5645773209.

The spelling of 389920288 in words is "three hundred eighty-nine million, nine hundred twenty thousand, two hundred eighty-eight".