304000145 has 4 divisors (see below), whose sum is σ = 364800180. Its totient is φ = 243200112.

The previous prime is 304000141. The next prime is 304000163. The reversal of 304000145 is 541000403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31618129 + 272382016 = 5623^2 + 16504^2 .

It is a cyclic number.

It is not a de Polignac number, because 304000145 - 2² = 304000141 is a prime.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (304000141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30400010 + ... + 30400019.

It is an arithmetic number, because the mean of its divisors is an integer number (91200045).

Almost surely, 2^304000145 is an apocalyptic number.

It is an amenable number.

304000145 is a deficient number, since it is larger than the sum of its proper divisors (60800035).

304000145 is an equidigital number, since it uses as much as digits as its factorization.

304000145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60800034.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 304000145 is about 17435.5999323224. The cubic root of 304000145 is about 672.3951882647.

Adding to 304000145 its reverse (541000403), we get a palindrome (845000548).

The spelling of 304000145 in words is "three hundred four million, one hundred forty-five", and thus it is an aban number.