522772768 has 72 divisors (see below), whose sum is σ = 1209463164. Its totient is φ = 221760000.

The previous prime is 522772759. The next prime is 522772799. The reversal of 522772768 is 867277225.

It can be written as a sum of positive squares in 2 ways, for example, as 513113104 + 9659664 = 22652^2 + 3108^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156718 + ... + 160018.

Almost surely, 2^522772768 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 522772768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604731582).

522772768 is an abundant number, since it is smaller than the sum of its proper divisors (686690396).

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

522772768 is a wasteful number, since it uses less digits than its factorization.

522772768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426 (or 3411 counting only the distinct ones).

The product of its digits is 658560, while the sum is 46.

The square root of 522772768 is about 22864.2246315068. The cubic root of 522772768 is about 805.5719187213.

The spelling of 522772768 in words is "five hundred twenty-two million, seven hundred seventy-two thousand, seven hundred sixty-eight".