531568768 has 32 divisors (see below), whose sum is σ = 1066749660. Its totient is φ = 263835648.

The previous prime is 531568729. The next prime is 531568783. The reversal of 531568768 is 867865135.

It can be written as a sum of positive squares in 2 ways, for example, as 490711104 + 40857664 = 22152^2 + 6392^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×531568768² = 565130710226075648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2380 + ... + 32692.

Almost surely, 2^531568768 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 531568768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533374830).

531568768 is an abundant number, since it is smaller than the sum of its proper divisors (535180892).

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

531568768 is a wasteful number, since it uses less digits than its factorization.

531568768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30464 (or 30452 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The square root of 531568768 is about 23055.7751550452. The cubic root of 531568768 is about 810.0649076676.

The spelling of 531568768 in words is "five hundred thirty-one million, five hundred sixty-eight thousand, seven hundred sixty-eight".