22027609 has 4 divisors (see below), whose sum is σ = 22053604. Its totient is φ = 22001616.

The previous prime is 22027547. The next prime is 22027613. The reversal of 22027609 is 90672022.

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 15976009 + 6051600 = 3997^2 + 2460^2 .

It is a cyclic number.

It is not a de Polignac number, because 22027609 - 2⁹ = 22027097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22027009) 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, 11682 + ... + 13435.

It is an arithmetic number, because the mean of its divisors is an integer number (5513401).

Almost surely, 2^22027609 is an apocalyptic number.

It is an amenable number.

22027609 is a deficient number, since it is larger than the sum of its proper divisors (25995).

22027609 is an equidigital number, since it uses as much as digits as its factorization.

22027609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25994.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 22027609 is about 4693.3579663179. The cubic root of 22027609 is about 280.3210984666.

The spelling of 22027609 in words is "twenty-two million, twenty-seven thousand, six hundred nine".