22320530 has 8 divisors (see below), whose sum is σ = 40176972. Its totient is φ = 8928208.

The previous prime is 22320503. The next prime is 22320559. The reversal of 22320530 is 3502322.

It can be written as a sum of positive squares in 2 ways, for example, as 21169201 + 1151329 = 4601^2 + 1073^2 .

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

It is a super-3 number, since 3×22320530³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22320499 and 22320508.

It is an unprimeable number.

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, 1116017 + ... + 1116036.

Almost surely, 2^22320530 is an apocalyptic number.

22320530 is a deficient number, since it is larger than the sum of its proper divisors (17856442).

22320530 is a wasteful number, since it uses less digits than its factorization.

22320530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232060.

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

The square root of 22320530 is about 4724.4608157969. The cubic root of 22320530 is about 281.5581918740.

Adding to 22320530 its reverse (3502322), we get a palindrome (25822852).

The spelling of 22320530 in words is "twenty-two million, three hundred twenty thousand, five hundred thirty".