512244020 has 24 divisors (see below), whose sum is σ = 1076146344. Its totient is φ = 204814976.

The previous prime is 512244013. The next prime is 512244041. The reversal of 512244020 is 20442215.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 75099556 + 437144464 = 8666^2 + 20908^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 512243983 and 512244001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79562 + ... + 85758.

It is an arithmetic number, because the mean of its divisors is an integer number (44839431).

Almost surely, 2^512244020 is an apocalyptic number.

It is an amenable number.

512244020 is an abundant number, since it is smaller than the sum of its proper divisors (563902324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

512244020 is a wasteful number, since it uses less digits than its factorization.

512244020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10339 (or 10337 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 512244020 is about 22632.8084867963. The cubic root of 512244020 is about 800.1270735643.

Adding to 512244020 its reverse (20442215), we get a palindrome (532686235).

The spelling of 512244020 in words is "five hundred twelve million, two hundred forty-four thousand, twenty".