22520007 has 12 divisors (see below), whose sum is σ = 32586840. Its totient is φ = 14986608.

The previous prime is 22519999. The next prime is 22520033. The reversal of 22520007 is 70002522.

It is a happy number.

It is not a de Polignac number, because 22520007 - 2³ = 22519999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520077) 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 11 ways as a sum of consecutive naturals, for example, 4033 + ... + 7829.

It is an arithmetic number, because the mean of its divisors is an integer number (2715570).

Almost surely, 2^22520007 is an apocalyptic number.

22520007 is a deficient number, since it is larger than the sum of its proper divisors (10066833).

22520007 is a wasteful number, since it uses less digits than its factorization.

22520007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462 (or 4459 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 22520007 is about 4745.5249446189. The cubic root of 22520007 is about 282.3944607984.

Adding to 22520007 its reverse (70002522), we get a palindrome (92522529).

The spelling of 22520007 in words is "twenty-two million, five hundred twenty thousand, seven".