522731268 has 72 divisors (see below), whose sum is σ = 1414576800. Its totient is φ = 162262656.

The previous prime is 522731267. The next prime is 522731329. The reversal of 522731268 is 862137225.

522731268 is a `hidden beast` number, since 522 + 7 + 3 + 126 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (522731267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33880 + ... + 46832.

It is an arithmetic number, because the mean of its divisors is an integer number (19646900).

Almost surely, 2^522731268 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 522731268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707288400).

522731268 is an abundant number, since it is smaller than the sum of its proper divisors (891845532).

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

522731268 is a wasteful number, since it uses less digits than its factorization.

522731268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13041 (or 13036 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 522731268 is about 22863.3170821734. The cubic root of 522731268 is about 805.5506015440.

The spelling of 522731268 in words is "five hundred twenty-two million, seven hundred thirty-one thousand, two hundred sixty-eight".