530001820 has 12 divisors (see below), whose sum is σ = 1113003864. Its totient is φ = 212000720.

The previous prime is 530001817. The next prime is 530001821. The reversal of 530001820 is 28100035.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530001821) 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 3 ways as a sum of consecutive naturals, for example, 13250026 + ... + 13250065.

It is an arithmetic number, because the mean of its divisors is an integer number (92750322).

Almost surely, 2^530001820 is an apocalyptic number.

It is an amenable number.

530001820 is an abundant number, since it is smaller than the sum of its proper divisors (583002044).

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

530001820 is a wasteful number, since it uses less digits than its factorization.

530001820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26500100 (or 26500098 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 530001820 is about 23021.7683942828. The cubic root of 530001820 is about 809.2681597866.

Adding to 530001820 its reverse (28100035), we get a palindrome (558101855).

The spelling of 530001820 in words is "five hundred thirty million, one thousand, eight hundred twenty".