22402209 has 16 divisors (see below), whose sum is σ = 31847040. Its totient is φ = 13958400.

The previous prime is 22402169. The next prime is 22402217. The reversal of 22402209 is 90220422.

It is not a de Polignac number, because 22402209 - 2⁹ = 22401697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22404209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6247 + ... + 9155.

It is an arithmetic number, because the mean of its divisors is an integer number (1990440).

Almost surely, 2^22402209 is an apocalyptic number.

It is an amenable number.

22402209 is a deficient number, since it is larger than the sum of its proper divisors (9444831).

22402209 is a wasteful number, since it uses less digits than its factorization.

22402209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 22402209 is about 4733.0971889451. The cubic root of 22402209 is about 281.9012153369.

The spelling of 22402209 in words is "twenty-two million, four hundred two thousand, two hundred nine".