245782 has 4 divisors (see below), whose sum is σ = 368676. Its totient is φ = 122890.

The previous prime is 245771. The next prime is 245783. The reversal of 245782 is 287542.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 245782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245783) by changing a digit.

245782 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 as a sum of consecutive naturals, namely, 61444 + ... + 61447.

It is an arithmetic number, because the mean of its divisors is an integer number (92169).

2²⁴⁵⁷⁸² is an apocalyptic number.

245782 is a deficient number, since it is larger than the sum of its proper divisors (122894).

245782 is a wasteful number, since it uses less digits than its factorization.

245782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122893.

The product of its digits is 4480, while the sum is 28.

The square root of 245782 is about 495.7640567851. The cubic root of 245782 is about 62.6397512804.

The spelling of 245782 in words is "two hundred forty-five thousand, seven hundred eighty-two".