22520006 has 4 divisors (see below), whose sum is σ = 33780012. Its totient is φ = 11260002.

The previous prime is 22519999. The next prime is 22520033. The reversal of 22520006 is 60002522.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5630000 + ... + 5630003.

It is an arithmetic number, because the mean of its divisors is an integer number (8445003).

Almost surely, 2^22520006 is an apocalyptic number.

22520006 is a deficient number, since it is larger than the sum of its proper divisors (11260006).

22520006 is a wasteful number, since it uses less digits than its factorization.

22520006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11260005.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22520006 is about 4745.5248392565. The cubic root of 22520006 is about 282.3944566185.

Adding to 22520006 its reverse (60002522), we get a palindrome (82522528).

The spelling of 22520006 in words is "twenty-two million, five hundred twenty thousand, six".