230445 has 20 divisors (see below), whose sum is σ = 413820. Its totient is φ = 122688.

The previous prime is 230431. The next prime is 230449. The reversal of 230445 is 544032.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59049 + 171396 = 243^2 + 414^2 .

It is not a de Polignac number, because 230445 - 2⁸ = 230189 is a prime.

It is an Ulam number.

It is a Curzon number.

230445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230449) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 121 + ... + 689.

It is an arithmetic number, because the mean of its divisors is an integer number (20691).

2²³⁰⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

230445 is a deficient number, since it is larger than the sum of its proper divisors (183375).

230445 is an equidigital number, since it uses as much as digits as its factorization.

230445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 230445 is about 480.0468727114. The cubic root of 230445 is about 61.3087455266.

Adding to 230445 its reverse (544032), we get a palindrome (774477).

The spelling of 230445 in words is "two hundred thirty thousand, four hundred forty-five".