304243020 has 48 divisors (see below), whose sum is σ = 946535520. Its totient is φ = 81131328.

The previous prime is 304243013. The next prime is 304243063. The reversal of 304243020 is 20342403.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 304242984 and 304243002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281167 + ... + 282246.

It is an arithmetic number, because the mean of its divisors is an integer number (19719490).

Almost surely, 2^304243020 is an apocalyptic number.

304243020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

304243020 is an abundant number, since it is smaller than the sum of its proper divisors (642292500).

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

304243020 is a wasteful number, since it uses less digits than its factorization.

304243020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563431 (or 563423 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 304243020 is about 17442.5634583911. The cubic root of 304243020 is about 672.5742062824.

Adding to 304243020 its reverse (20342403), we get a palindrome (324585423).

The spelling of 304243020 in words is "three hundred four million, two hundred forty-three thousand, twenty".