245838 has 8 divisors (see below), whose sum is σ = 491688. Its totient is φ = 81944.

The previous prime is 245821. The next prime is 245849. The reversal of 245838 is 838542.

It is a sphenic number, since it is the product of 3 distinct primes.

245838 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20481 + ... + 20492.

It is an arithmetic number, because the mean of its divisors is an integer number (61461).

2²⁴⁵⁸³⁸ is an apocalyptic number.

245838 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.

245838 is a wasteful number, since it uses less digits than its factorization.

245838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40978.

The product of its digits is 7680, while the sum is 30.

The square root of 245838 is about 495.8205320476. The cubic root of 245838 is about 62.6445082868.

Subtracting 245838 from its reverse (838542), we obtain a cube (592704 = 84³).

The spelling of 245838 in words is "two hundred forty-five thousand, eight hundred thirty-eight".