304030240 has 24 divisors (see below), whose sum is σ = 718271820. Its totient is φ = 121612032.

The previous prime is 304030231. The next prime is 304030241. The reversal of 304030240 is 42030403.

It can be written as a sum of positive squares in 2 ways, for example, as 301508496 + 2521744 = 17364^2 + 1588^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (304030241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949935 + ... + 950254.

Almost surely, 2^304030240 is an apocalyptic number.

It is an amenable number.

304030240 is an abundant number, since it is smaller than the sum of its proper divisors (414241580).

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

304030240 is a wasteful number, since it uses less digits than its factorization.

304030240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900204 (or 1900196 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 304030240 is about 17436.4629440721. The cubic root of 304030240 is about 672.4173758259.

Adding to 304030240 its reverse (42030403), we get a palindrome (346060643).

The spelling of 304030240 in words is "three hundred four million, thirty thousand, two hundred forty".