304045 has 24 divisors (see below), whose sum is σ = 455544. Its totient is φ = 193536.

The previous prime is 304039. The next prime is 304049. The reversal of 304045 is 540403.

304045 = T₈₆ + T₈₇ + ... + T₁₃₄.

304045 = 25² + 26² + ... + 97².

It can be written as a sum of positive squares in 4 ways, for example, as 70756 + 233289 = 266^2 + 483^2 .

It is not a de Polignac number, because 304045 - 2⁵ = 304013 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304049) 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, 4129 + ... + 4201.

It is an arithmetic number, because the mean of its divisors is an integer number (18981).

2³⁰⁴⁰⁴⁵ is an apocalyptic number.

304045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

304045 is a deficient number, since it is larger than the sum of its proper divisors (151499).

304045 is a wasteful number, since it uses less digits than its factorization.

304045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 304045 is about 551.4027566126. The cubic root of 304045 is about 67.2428257112.

Adding to 304045 its reverse (540403), we get a palindrome (844448).

The spelling of 304045 in words is "three hundred four thousand, forty-five".