245278 has 8 divisors (see below), whose sum is σ = 401400. Its totient is φ = 111480.

The previous prime is 245269. The next prime is 245279. The reversal of 245278 is 872542.

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

It is a super-2 number, since 2×245278² = 120322594568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5553 + ... + 5596.

It is an arithmetic number, because the mean of its divisors is an integer number (50175).

2²⁴⁵²⁷⁸ is an apocalyptic number.

245278 is a deficient number, since it is larger than the sum of its proper divisors (156122).

245278 is a wasteful number, since it uses less digits than its factorization.

245278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11162.

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

The square root of 245278 is about 495.2554896213. The cubic root of 245278 is about 62.5969056710.

Subtracting 245278 from its reverse (872542), we obtain a square (627264 = 792²).

The spelling of 245278 in words is "two hundred forty-five thousand, two hundred seventy-eight".