22331530 has 32 divisors (see below), whose sum is σ = 43513344. Its totient is φ = 8202816.

The previous prime is 22331513. The next prime is 22331531. The reversal of 22331530 is 3513322.

It is a junction number, because it is equal to n+sod(n) for n = 22331498 and 22331507.

It is not an unprimeable number, because it can be changed into a prime (22331531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36487 + ... + 37093.

It is an arithmetic number, because the mean of its divisors is an integer number (1359792).

Almost surely, 2^22331530 is an apocalyptic number.

22331530 is a deficient number, since it is larger than the sum of its proper divisors (21181814).

22331530 is a wasteful number, since it uses less digits than its factorization.

22331530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 22331530 is about 4725.6248264118. The cubic root of 22331530 is about 281.6044367656.

Adding to 22331530 its reverse (3513322), we get a palindrome (25844852).

The spelling of 22331530 in words is "twenty-two million, three hundred thirty-one thousand, five hundred thirty".