304140402 has 12 divisors (see below), whose sum is σ = 658970910. Its totient is φ = 101380128.

The previous prime is 304140377. The next prime is 304140413. The reversal of 304140402 is 204041403.

304140402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 162792081 + 141348321 = 12759^2 + 11889^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 16896689 = 304140402 / (3 + 0 + 4 + 1 + 4 + 0 + 4 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8448327 + ... + 8448362.

Almost surely, 2^304140402 is an apocalyptic number.

304140402 is an abundant number, since it is smaller than the sum of its proper divisors (354830508).

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

304140402 is a wasteful number, since it uses less digits than its factorization.

304140402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16896697 (or 16896694 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 304140402 is about 17439.6216128676. The cubic root of 304140402 is about 672.4985803557.

Adding to 304140402 its reverse (204041403), we get a palindrome (508181805).

The spelling of 304140402 in words is "three hundred four million, one hundred forty thousand, four hundred two".