389334272 has 72 divisors (see below), whose sum is σ = 830137896. Its totient is φ = 181600256.

The previous prime is 389334241. The next prime is 389334277. The reversal of 389334272 is 272433983.

It can be written as a sum of positive squares in 4 ways, for example, as 71639296 + 317694976 = 8464^2 + 17824^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389334277) by changing a digit.

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, 595898 + ... + 596550.

It is an arithmetic number, because the mean of its divisors is an integer number (11529693).

Almost surely, 2^389334272 is an apocalyptic number.

389334272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389334272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415068948).

389334272 is an abundant number, since it is smaller than the sum of its proper divisors (440803624).

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

389334272 is a wasteful number, since it uses less digits than its factorization.

389334272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823 (or 809 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

The square root of 389334272 is about 19731.5552352064. Note that the first 3 decimals coincide. The cubic root of 389334272 is about 730.1984023182.

The spelling of 389334272 in words is "three hundred eighty-nine million, three hundred thirty-four thousand, two hundred seventy-two".