512404 has 12 divisors (see below), whose sum is σ = 914004. Its totient is φ = 251264.

The previous prime is 512389. The next prime is 512419. The reversal of 512404 is 404215.

It is an interprime number because it is at equal distance from previous prime (512389) and next prime (512419).

It can be written as a sum of positive squares in 2 ways, for example, as 448900 + 63504 = 670^2 + 252^2 .

It is a congruent number.

It is an unprimeable number.

512404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997 + ... + 1420.

It is an arithmetic number, because the mean of its divisors is an integer number (76167).

2⁵¹²⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

512404 is a deficient number, since it is larger than the sum of its proper divisors (401600).

512404 is a wasteful number, since it uses less digits than its factorization.

512404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474 (or 2472 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 512404 is about 715.8240007153. The cubic root of 512404 is about 80.0210361347.

Adding to 512404 its reverse (404215), we get a palindrome (916619).

The spelling of 512404 in words is "five hundred twelve thousand, four hundred four".