12402226 has 8 divisors (see below), whose sum is σ = 18795420. Its totient is φ = 6137088.

The previous prime is 12402223. The next prime is 12402233. The reversal of 12402226 is 62220421.

It can be written as a sum of positive squares in 2 ways, for example, as 11594025 + 808201 = 3405^2 + 899^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12402223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31771 + ... + 32158.

Almost surely, 2^12402226 is an apocalyptic number.

12402226 is a deficient number, since it is larger than the sum of its proper divisors (6393194).

12402226 is an equidigital number, since it uses as much as digits as its factorization.

12402226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64028.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 12402226 is about 3521.6794289089. The cubic root of 12402226 is about 231.4727548261.

Adding to 12402226 its reverse (62220421), we get a palindrome (74622647).

The spelling of 12402226 in words is "twelve million, four hundred two thousand, two hundred twenty-six".