533320020 has 72 divisors (see below), whose sum is σ = 1621194120. Its totient is φ = 141914880.

The previous prime is 533320003. The next prime is 533320027. The reversal of 533320020 is 20023335.

It can be written as a sum of positive squares in 4 ways, for example, as 220879044 + 312440976 = 14862^2 + 17676^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 533319975 and 533320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533320027) 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, 88710 + ... + 94530.

It is an arithmetic number, because the mean of its divisors is an integer number (22516585).

Almost surely, 2^533320020 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 533320020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810597060).

533320020 is an abundant number, since it is smaller than the sum of its proper divisors (1087874100).

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

533320020 is a wasteful number, since it uses less digits than its factorization.

533320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6345 (or 6340 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 533320020 is about 23093.7225236643. The cubic root of 533320020 is about 810.9535181551.

Adding to 533320020 its reverse (20023335), we get a palindrome (553343355).

The spelling of 533320020 in words is "five hundred thirty-three million, three hundred twenty thousand, twenty".