245830 has 32 divisors (see below), whose sum is σ = 499968. Its totient is φ = 86400.

The previous prime is 245821. The next prime is 245849. The reversal of 245830 is 38542.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

245830 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4000 + ... + 4060.

It is an arithmetic number, because the mean of its divisors is an integer number (15624).

2²⁴⁵⁸³⁰ is an apocalyptic number.

245830 is an abundant number, since it is smaller than the sum of its proper divisors (254138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245830 is a wasteful number, since it uses less digits than its factorization.

245830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 245830 is about 495.8124645468. The cubic root of 245830 is about 62.6438287587.

The spelling of 245830 in words is "two hundred forty-five thousand, eight hundred thirty".