20322530 has 8 divisors (see below), whose sum is σ = 36580572. Its totient is φ = 8129008.

The previous prime is 20322521. The next prime is 20322539. The reversal of 20322530 is 3522302.

It is an interprime number because it is at equal distance from previous prime (20322521) and next prime (20322539).

It can be written as a sum of positive squares in 2 ways, for example, as 19598329 + 724201 = 4427^2 + 851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20322499 and 20322508.

It is not an unprimeable number, because it can be changed into a prime (20322539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016117 + ... + 1016136.

Almost surely, 2^20322530 is an apocalyptic number.

20322530 is a deficient number, since it is larger than the sum of its proper divisors (16258042).

20322530 is a wasteful number, since it uses less digits than its factorization.

20322530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032260.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 20322530 is about 4508.0516855955. The cubic root of 20322530 is about 272.8931227934.

Adding to 20322530 its reverse (3522302), we get a palindrome (23844832).

The spelling of 20322530 in words is "twenty million, three hundred twenty-two thousand, five hundred thirty".