22222530 has 48 divisors (see below), whose sum is σ = 63033984. Its totient is φ = 5387040.

The previous prime is 22222517. The next prime is 22222537. The reversal of 22222530 is 3522222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22222537) 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 23 ways as a sum of consecutive naturals, for example, 10234 + ... + 12213.

It is an arithmetic number, because the mean of its divisors is an integer number (1313208).

Almost surely, 2^22222530 is an apocalyptic number.

22222530 is an abundant number, since it is smaller than the sum of its proper divisors (40811454).

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

22222530 is a wasteful number, since it uses less digits than its factorization.

22222530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22471 (or 22468 counting only the distinct ones).

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

The square root of 22222530 is about 4714.0778525603. The cubic root of 22222530 is about 281.1455197104.

Adding to 22222530 its reverse (3522222), we get a palindrome (25744752).

The spelling of 22222530 in words is "twenty-two million, two hundred twenty-two thousand, five hundred thirty".