22520909 has 8 divisors (see below), whose sum is σ = 23784480. Its totient is φ = 21265200.

The previous prime is 22520899. The next prime is 22520921. The reversal of 22520909 is 90902522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22520909 - 2⁴ = 22520893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520929) 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 7 ways as a sum of consecutive naturals, for example, 4499 + ... + 8079.

It is an arithmetic number, because the mean of its divisors is an integer number (2973060).

Almost surely, 2^22520909 is an apocalyptic number.

It is an amenable number.

22520909 is a deficient number, since it is larger than the sum of its proper divisors (1263571).

22520909 is a wasteful number, since it uses less digits than its factorization.

22520909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 22520909 is about 4745.6199805716. The cubic root of 22520909 is about 282.3982310223.

The spelling of 22520909 in words is "twenty-two million, five hundred twenty thousand, nine hundred nine".