522738 has 24 divisors (see below), whose sum is σ = 1147068. Its totient is φ = 172032.

The previous prime is 522737. The next prime is 522749. The reversal of 522738 is 837225.

It can be written as a sum of positive squares in 2 ways, for example, as 522729 + 9 = 723^2 + 3^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (522737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1906 + ... + 2162.

2⁵²²⁷³⁸ is an apocalyptic number.

522738 is an abundant number, since it is smaller than the sum of its proper divisors (624330).

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

522738 is a wasteful number, since it uses less digits than its factorization.

522738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 375 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 522738 is about 723.0062240396. The cubic root of 522738 is about 80.5554059626. Note that the first 3 decimals are identical.

The spelling of 522738 in words is "five hundred twenty-two thousand, seven hundred thirty-eight".