245812 has 12 divisors (see below), whose sum is σ = 491680. Its totient is φ = 105336.

The previous prime is 245789. The next prime is 245821. The reversal of 245812 is 218542.

245812 is an admirable number.

It is a congruent number.

It is an unprimeable number.

245812 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 3 ways as a sum of consecutive naturals, for example, 4362 + ... + 4417.

2²⁴⁵⁸¹² is an apocalyptic number.

It is an amenable number.

245812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

245812 is a wasteful number, since it uses less digits than its factorization.

245812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8790 (or 8788 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 245812 is about 495.7943121900. The cubic root of 245812 is about 62.6422997665.

The spelling of 245812 in words is "two hundred forty-five thousand, eight hundred twelve".