533403220 has 144 divisors (see below), whose sum is σ = 1397732112. Its totient is φ = 169881600.

The previous prime is 533403161. The next prime is 533403229. The reversal of 533403220 is 22304335.

It can be written as a sum of positive squares in 8 ways, for example, as 4955076 + 528448144 = 2226^2 + 22988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 533403191 and 533403200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533403229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1682502 + ... + 1682818.

It is an arithmetic number, because the mean of its divisors is an integer number (9706473).

Almost surely, 2^533403220 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 533403220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698866056).

533403220 is an abundant number, since it is smaller than the sum of its proper divisors (864328892).

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

533403220 is a wasteful number, since it uses less digits than its factorization.

533403220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 533403220 is about 23095.5238087384. The cubic root of 533403220 is about 810.9956865980.

Adding to 533403220 its reverse (22304335), we get a palindrome (555707555).

The spelling of 533403220 in words is "five hundred thirty-three million, four hundred three thousand, two hundred twenty".