304304240 has 40 divisors (see below), whose sum is σ = 710060208. Its totient is φ = 121282560.

The previous prime is 304304219. The next prime is 304304269. The reversal of 304304240 is 42403403.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15920 + ... + 29360.

Almost surely, 2^304304240 is an apocalyptic number.

It is an amenable number.

304304240 is an abundant number, since it is smaller than the sum of its proper divisors (405755968).

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

304304240 is a wasteful number, since it uses less digits than its factorization.

304304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13737 (or 13731 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 304304240 is about 17444.3182727214. The cubic root of 304304240 is about 672.6193152127.

Adding to 304304240 its reverse (42403403), we get a palindrome (346707643).

The spelling of 304304240 in words is "three hundred four million, three hundred four thousand, two hundred forty".