320004120 has 64 divisors (see below), whose sum is σ = 985972320. Its totient is φ = 83026944.

The previous prime is 320004017. The next prime is 320004121. The reversal of 320004120 is 21400023.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 320004096 and 320004105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320004121) 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, 31597 + ... + 40476.

Almost surely, 2^320004120 is an apocalyptic number.

320004120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320004120 is an abundant number, since it is smaller than the sum of its proper divisors (665968200).

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

320004120 is a wasteful number, since it uses less digits than its factorization.

320004120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72124 (or 72120 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 320004120 is about 17888.6589771285. The cubic root of 320004120 is about 683.9933141168.

Adding to 320004120 its reverse (21400023), we get a palindrome (341404143).

The spelling of 320004120 in words is "three hundred twenty million, four thousand, one hundred twenty".