512428 has 12 divisors (see below), whose sum is σ = 1024912. Its totient is φ = 219600.

The previous prime is 512419. The next prime is 512429. The reversal of 512428 is 824215.

512428 is an admirable number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 512399 and 512408.

It is not an unprimeable number, because it can be changed into a prime (512429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9123 + ... + 9178.

2⁵¹²⁴²⁸ is an apocalyptic number.

It is an amenable number.

512428 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.

512428 is a wasteful number, since it uses less digits than its factorization.

512428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18312 (or 18310 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 512428 is about 715.8407644162. The cubic root of 512428 is about 80.0222854581.

The spelling of 512428 in words is "five hundred twelve thousand, four hundred twenty-eight".