522891228 has 48 divisors (see below), whose sum is σ = 1273416480. Its totient is φ = 166785024.

The previous prime is 522891221. The next prime is 522891247. The reversal of 522891228 is 822198225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522891221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32676 + ... + 45972.

It is an arithmetic number, because the mean of its divisors is an integer number (26529510).

Almost surely, 2^522891228 is an apocalyptic number.

522891228 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522891228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636708240).

522891228 is an abundant number, since it is smaller than the sum of its proper divisors (750525252).

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

522891228 is a wasteful number, since it uses less digits than its factorization.

522891228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446 (or 13444 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 522891228 is about 22866.8149946598. The cubic root of 522891228 is about 805.6327614993.

The spelling of 522891228 in words is "five hundred twenty-two million, eight hundred ninety-one thousand, two hundred twenty-eight".