304195140 has 72 divisors (see below), whose sum is σ = 924618240. Its totient is φ = 80952384.

The previous prime is 304195097. The next prime is 304195141. The reversal of 304195140 is 41591403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304195141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104221 + ... + 107099.

It is an arithmetic number, because the mean of its divisors is an integer number (12841920).

Almost surely, 2^304195140 is an apocalyptic number.

304195140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

304195140 is an abundant number, since it is smaller than the sum of its proper divisors (620423100).

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

304195140 is a wasteful number, since it uses less digits than its factorization.

304195140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481 (or 3476 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 304195140 is about 17441.1908997064. The cubic root of 304195140 is about 672.5389224903.

The spelling of 304195140 in words is "three hundred four million, one hundred ninety-five thousand, one hundred forty".