22267409 has 4 divisors (see below), whose sum is σ = 22572516. Its totient is φ = 21962304.

The previous prime is 22267403. The next prime is 22267429. The reversal of 22267409 is 90476222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6838225 + 15429184 = 2615^2 + 3928^2 .

It is a cyclic number.

It is not a de Polignac number, because 22267409 - 2¹² = 22263313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22267403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152444 + ... + 152589.

It is an arithmetic number, because the mean of its divisors is an integer number (5643129).

Almost surely, 2^22267409 is an apocalyptic number.

It is an amenable number.

22267409 is a deficient number, since it is larger than the sum of its proper divisors (305107).

22267409 is an equidigital number, since it uses as much as digits as its factorization.

22267409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305106.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 22267409 is about 4718.8355555158. The cubic root of 22267409 is about 281.3346527731.

The spelling of 22267409 in words is "twenty-two million, two hundred sixty-seven thousand, four hundred nine".