22426009 has 8 divisors (see below), whose sum is σ = 23786568. Its totient is φ = 21070080.

The previous prime is 22426007. The next prime is 22426013. The reversal of 22426009 is 90062422.

It can be written as a sum of positive squares in 4 ways, for example, as 5161984 + 17264025 = 2272^2 + 4155^2 .

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 22426009 - 2¹ = 22426007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22426007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18399 + ... + 19579.

It is an arithmetic number, because the mean of its divisors is an integer number (2973321).

Almost surely, 2^22426009 is an apocalyptic number.

It is an amenable number.

22426009 is a deficient number, since it is larger than the sum of its proper divisors (1360559).

22426009 is a wasteful number, since it uses less digits than its factorization.

22426009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 22426009 is about 4735.6107314685. The cubic root of 22426009 is about 282.0010101736.

The spelling of 22426009 in words is "twenty-two million, four hundred twenty-six thousand, nine".