12208445 has 8 divisors (see below), whose sum is σ = 14689080. Its totient is φ = 9740800.

The previous prime is 12208439. The next prime is 12208453. The reversal of 12208445 is 54480221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3003289 + 9205156 = 1733^2 + 3034^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12208445 - 2⁴ = 12208429 is a prime.

It is a super-2 number, since 2×12208445² = 298092258636050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040 + ... + 5049.

It is an arithmetic number, because the mean of its divisors is an integer number (1836135).

Almost surely, 2^12208445 is an apocalyptic number.

It is an amenable number.

12208445 is a deficient number, since it is larger than the sum of its proper divisors (2480635).

12208445 is an equidigital number, since it uses as much as digits as its factorization.

12208445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6495.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 12208445 is about 3494.0585284165. The cubic root of 12208445 is about 230.2608571531.

Adding to 12208445 its reverse (54480221), we get a palindrome (66688666).

The spelling of 12208445 in words is "twelve million, two hundred eight thousand, four hundred forty-five".