530220420 has 36 divisors (see below), whose sum is σ = 1608335820. Its totient is φ = 141392064.

The previous prime is 530220391. The next prime is 530220421. The reversal of 530220420 is 24022035.

It can be written as a sum of positive squares in 2 ways, for example, as 201015684 + 329204736 = 14178^2 + 18144^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×530220420² = 562267387569952800, which contains 22 as substring.

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 = 530220393 and 530220402.

It is not an unprimeable number, because it can be changed into a prime (530220421) 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, 1472655 + ... + 1473014.

It is an arithmetic number, because the mean of its divisors is an integer number (44675995).

Almost surely, 2^530220420 is an apocalyptic number.

It is an amenable number.

530220420 is an abundant number, since it is smaller than the sum of its proper divisors (1078115400).

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

530220420 is a wasteful number, since it uses less digits than its factorization.

530220420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945684 (or 2945679 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 530220420 is about 23026.5155852986. The cubic root of 530220420 is about 809.3794057591.

Adding to 530220420 its reverse (24022035), we get a palindrome (554242455).

The spelling of 530220420 in words is "five hundred thirty million, two hundred twenty thousand, four hundred twenty".