304120020 has 48 divisors (see below), whose sum is σ = 874556928. Its totient is φ = 78906240.

The previous prime is 304120009. The next prime is 304120027. The reversal of 304120020 is 20021403.

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 = 304119978 and 304120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304120027) 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, 66276 + ... + 70715.

It is an arithmetic number, because the mean of its divisors is an integer number (18219936).

Almost surely, 2^304120020 is an apocalyptic number.

304120020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

304120020 is an abundant number, since it is smaller than the sum of its proper divisors (570436908).

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

304120020 is a wasteful number, since it uses less digits than its factorization.

304120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137040 (or 137038 counting only the distinct ones).

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

The square root of 304120020 is about 17439.0372440683. The cubic root of 304120020 is about 672.4835574998.

Adding to 304120020 its reverse (20021403), we get a palindrome (324141423).

The spelling of 304120020 in words is "three hundred four million, one hundred twenty thousand, twenty".