22173530 has 16 divisors (see below), whose sum is σ = 40068864. Its totient is φ = 8834640.

The previous prime is 22173523. The next prime is 22173539. The reversal of 22173530 is 3537122.

It is a junction number, because it is equal to n+sod(n) for n = 22173496 and 22173505.

It is not an unprimeable number, because it can be changed into a prime (22173539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586 + ... + 6845.

It is an arithmetic number, because the mean of its divisors is an integer number (2504304).

Almost surely, 2^22173530 is an apocalyptic number.

22173530 is a deficient number, since it is larger than the sum of its proper divisors (17895334).

22173530 is a wasteful number, since it uses less digits than its factorization.

22173530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8701.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 22173530 is about 4708.8777856300. The cubic root of 22173530 is about 280.9387285514.

The spelling of 22173530 in words is "twenty-two million, one hundred seventy-three thousand, five hundred thirty".