1520338568 has 64 divisors (see below), whose sum is σ = 3311193600. Its totient is φ = 640972800.

The previous prime is 1520338559. The next prime is 1520338583. The reversal of 1520338568 is 8658330251.

It is a super-2 number, since 2×1520338568² = 4622858722696581248, which contains 22 as substring.

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, 1773596 + ... + 1774452.

It is an arithmetic number, because the mean of its divisors is an integer number (51737400).

Almost surely, 2^1520338568 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 1520338568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1655596800).

1520338568 is an abundant number, since it is smaller than the sum of its proper divisors (1790855032).

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

1520338568 is a wasteful number, since it uses less digits than its factorization.

1520338568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 1520338568 is about 38991.5191804577. The cubic root of 1520338568 is about 1149.8647775473.

The spelling of 1520338568 in words is "one billion, five hundred twenty million, three hundred thirty-eight thousand, five hundred sixty-eight".