245404 has 12 divisors (see below), whose sum is σ = 452200. Its totient is φ = 116208.

The previous prime is 245389. The next prime is 245407. The reversal of 245404 is 404542.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245407) 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, 1539 + ... + 1690.

2²⁴⁵⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

245404 is a deficient number, since it is larger than the sum of its proper divisors (206796).

245404 is a wasteful number, since it uses less digits than its factorization.

245404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 245404 is about 495.3826803593. The cubic root of 245404 is about 62.6076225717.

Adding to 245404 its reverse (404542), we get a palindrome (649946).

The spelling of 245404 in words is "two hundred forty-five thousand, four hundred four".