22074209 has 4 divisors (see below), whose sum is σ = 22085316. Its totient is φ = 22063104.

The previous prime is 22074197. The next prime is 22074223. The reversal of 22074209 is 90247022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18464209 + 3610000 = 4297^2 + 1900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22074209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22074229) 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, 1664 + ... + 6849.

It is an arithmetic number, because the mean of its divisors is an integer number (5521329).

Almost surely, 2^22074209 is an apocalyptic number.

It is an amenable number.

22074209 is a deficient number, since it is larger than the sum of its proper divisors (11107).

22074209 is an equidigital number, since it uses as much as digits as its factorization.

22074209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11106.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22074209 is about 4698.3198060583. The cubic root of 22074209 is about 280.5186348449.

The spelling of 22074209 in words is "twenty-two million, seventy-four thousand, two hundred nine".