513224244 has 72 divisors (see below), whose sum is σ = 1420866720. Its totient is φ = 155230272.

The previous prime is 513224227. The next prime is 513224263. The reversal of 513224244 is 442422315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18319 + ... + 36905.

It is an arithmetic number, because the mean of its divisors is an integer number (19734260).

Almost surely, 2^513224244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 513224244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710433360).

513224244 is an abundant number, since it is smaller than the sum of its proper divisors (907642476).

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

513224244 is a wasteful number, since it uses less digits than its factorization.

513224244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18669 (or 18664 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 513224244 is about 22654.4530721887. The cubic root of 513224244 is about 800.6371195470.

Adding to 513224244 its reverse (442422315), we get a palindrome (955646559).

The spelling of 513224244 in words is "five hundred thirteen million, two hundred twenty-four thousand, two hundred forty-four".