304641 has 10 divisors (see below), whose sum is σ = 455202. Its totient is φ = 203040.

The previous prime is 304631. The next prime is 304643. The reversal of 304641 is 146403.

It can be written as a sum of positive squares in only one way, i.e., 254016 + 50625 = 504^2 + 225^2 .

It is not a de Polignac number, because 304641 - 2⁵ = 304609 is a prime.

It is a super-2 number, since 2×304641² = 185612277762, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304643) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1800 + ... + 1961.

2³⁰⁴⁶⁴¹ is an apocalyptic number.

It is an amenable number.

304641 is a deficient number, since it is larger than the sum of its proper divisors (150561).

304641 is an equidigital number, since it uses as much as digits as its factorization.

304641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 304641 is about 551.9429318326. The cubic root of 304641 is about 67.2867343058.

The spelling of 304641 in words is "three hundred four thousand, six hundred forty-one".