304161 has 16 divisors (see below), whose sum is σ = 477120. Its totient is φ = 169920.

The previous prime is 304153. The next prime is 304163. The reversal of 304161 is 161403.

It is not a de Polignac number, because 304161 - 2³ = 304153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 304161.

It is not an unprimeable number, because it can be changed into a prime (304163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75 + ... + 783.

It is an arithmetic number, because the mean of its divisors is an integer number (29820).

2³⁰⁴¹⁶¹ is an apocalyptic number.

It is an amenable number.

304161 is a deficient number, since it is larger than the sum of its proper divisors (172959).

304161 is a wasteful number, since it uses less digits than its factorization.

304161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 304161 is about 551.5079328532. The cubic root of 304161 is about 67.2513761736.

Adding to 304161 its reverse (161403), we get a palindrome (465564).

It can be divided in two parts, 304 and 161, that added together give a triangular number (465 = T₃₀).

The spelling of 304161 in words is "three hundred four thousand, one hundred sixty-one".