512391320 has 64 divisors (see below), whose sum is σ = 1326412800. Its totient is φ = 174499200.

The previous prime is 512391301. The next prime is 512391349. The reversal of 512391320 is 23193215.

It is a super-2 number, since 2×512391320² = 525089729622684800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 512391320.

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, 36221 + ... + 48339.

It is an arithmetic number, because the mean of its divisors is an integer number (20725200).

Almost surely, 2^512391320 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 512391320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663206400).

512391320 is an abundant number, since it is smaller than the sum of its proper divisors (814021480).

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

512391320 is a wasteful number, since it uses less digits than its factorization.

512391320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12288 (or 12284 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 512391320 is about 22636.0623784262. The cubic root of 512391320 is about 800.2037605976.

The spelling of 512391320 in words is "five hundred twelve million, three hundred ninety-one thousand, three hundred twenty".