304780 has 36 divisors (see below), whose sum is σ = 746928. Its totient is φ = 104160.

The previous prime is 304771. The next prime is 304781. The reversal of 304780 is 87403.

It is not an unprimeable number, because it can be changed into a prime (304781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 825 + ... + 1135.

It is an arithmetic number, because the mean of its divisors is an integer number (20748).

2³⁰⁴⁷⁸⁰ 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 304780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373464).

304780 is an abundant number, since it is smaller than the sum of its proper divisors (442148).

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

304780 is a wasteful number, since it uses less digits than its factorization.

304780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 304780 is about 552.0688362876. The cubic root of 304780 is about 67.2969664960.

The spelling of 304780 in words is "three hundred four thousand, seven hundred eighty".