320423380 has 24 divisors (see below), whose sum is σ = 678031200. Its totient is φ = 127189920.

The previous prime is 320423339. The next prime is 320423381. The reversal of 320423380 is 83324023.

It is a super-2 number, since 2×320423380² = 205342284901248800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320423381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58530 + ... + 63769.

It is an arithmetic number, because the mean of its divisors is an integer number (28251300).

Almost surely, 2^320423380 is an apocalyptic number.

It is an amenable number.

320423380 is an abundant number, since it is smaller than the sum of its proper divisors (357607820).

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

320423380 is a wasteful number, since it uses less digits than its factorization.

320423380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122439 (or 122437 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 320423380 is about 17900.3737391151. The cubic root of 320423380 is about 684.2918997395.

The spelling of 320423380 in words is "three hundred twenty million, four hundred twenty-three thousand, three hundred eighty".