513227320 has 64 divisors (see below), whose sum is σ = 1201766400. Its totient is φ = 197043840.

The previous prime is 513227287. The next prime is 513227339. The reversal of 513227320 is 23722315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155851 + ... + 159109.

It is an arithmetic number, because the mean of its divisors is an integer number (18777600).

Almost surely, 2^513227320 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 513227320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600883200).

513227320 is an abundant number, since it is smaller than the sum of its proper divisors (688539080).

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

513227320 is a wasteful number, since it uses less digits than its factorization.

513227320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428 (or 3424 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 513227320 is about 22654.5209616094. The cubic root of 513227320 is about 800.6387190784.

Adding to 513227320 its reverse (23722315), we get a palindrome (536949635).

The spelling of 513227320 in words is "five hundred thirteen million, two hundred twenty-seven thousand, three hundred twenty".