22520022 has 16 divisors (see below), whose sum is σ = 51474432. Its totient is φ = 6434280.

The previous prime is 22519999. The next prime is 22520033. The reversal of 22520022 is 22002522.

It is a junction number, because it is equal to n+sod(n) for n = 22519983 and 22520010.

It is a congruent number.

It is an unprimeable number.

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, 268054 + ... + 268137.

It is an arithmetic number, because the mean of its divisors is an integer number (3217152).

Almost surely, 2^22520022 is an apocalyptic number.

22520022 is an abundant number, since it is smaller than the sum of its proper divisors (28954410).

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

22520022 is a wasteful number, since it uses less digits than its factorization.

22520022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536203.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 22520022 is about 4745.5265250549. The cubic root of 22520022 is about 282.3945234970.

Adding to 22520022 its reverse (22002522), we get a palindrome (44522544).

The spelling of 22520022 in words is "twenty-two million, five hundred twenty thousand, twenty-two".