304235140 has 36 divisors (see below), whose sum is σ = 702260748. Its totient is φ = 110630080.

The previous prime is 304235131. The next prime is 304235149. The reversal of 304235140 is 41532403.

It is an interprime number because it is at equal distance from previous prime (304235131) and next prime (304235149).

It can be written as a sum of positive squares in 2 ways, for example, as 145878084 + 158357056 = 12078^2 + 12584^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (304235149) 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, 60439 + ... + 65278.

It is an arithmetic number, because the mean of its divisors is an integer number (19507243).

Almost surely, 2^304235140 is an apocalyptic number.

It is an amenable number.

304235140 is an abundant number, since it is smaller than the sum of its proper divisors (398025608).

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

304235140 is a wasteful number, since it uses less digits than its factorization.

304235140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125748 (or 125735 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 304235140 is about 17442.3375726994. The cubic root of 304235140 is about 672.5683995971.

Adding to 304235140 its reverse (41532403), we get a palindrome (345767543).

The spelling of 304235140 in words is "three hundred four million, two hundred thirty-five thousand, one hundred forty".