305120 has 24 divisors (see below), whose sum is σ = 721224. Its totient is φ = 121984.

The previous prime is 305119. The next prime is 305131. The reversal of 305120 is 21503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794 + ... + 1113.

It is an arithmetic number, because the mean of its divisors is an integer number (30051).

2³⁰⁵¹²⁰ is an apocalyptic number.

It is an amenable number.

305120 is an abundant number, since it is smaller than the sum of its proper divisors (416104).

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

305120 is a wasteful number, since it uses less digits than its factorization.

305120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 305120 is about 552.3766830705. The cubic root of 305120 is about 67.3219817699.

Adding to 305120 its reverse (21503), we get a palindrome (326623).

The spelling of 305120 in words is "three hundred five thousand, one hundred twenty".