22520242 has 4 divisors (see below), whose sum is σ = 33780366. Its totient is φ = 11260120.

The previous prime is 22520231. The next prime is 22520249. The reversal of 22520242 is 24202522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11689561 + 10830681 = 3419^2 + 3291^2 .

It is a super-2 number, since 2×22520242² = 1014322599477128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22520249) 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 as a sum of consecutive naturals, namely, 5630059 + ... + 5630062.

Almost surely, 2^22520242 is an apocalyptic number.

22520242 is a deficient number, since it is larger than the sum of its proper divisors (11260124).

22520242 is a wasteful number, since it uses less digits than its factorization.

22520242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11260123.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22520242 is about 4745.5497047234. The cubic root of 22520242 is about 282.3954430726.

Adding to 22520242 its reverse (24202522), we get a palindrome (46722764).

The spelling of 22520242 in words is "twenty-two million, five hundred twenty thousand, two hundred forty-two".