12890194 has 8 divisors (see below), whose sum is σ = 19600380. Its totient is φ = 6356736.

The previous prime is 12890191. The next prime is 12890209. The reversal of 12890194 is 49109821.

It can be written as a sum of positive squares in 2 ways, for example, as 12159169 + 731025 = 3487^2 + 855^2 .

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 (12890191) 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, 43999 + ... + 44290.

Almost surely, 2^12890194 is an apocalyptic number.

12890194 is a deficient number, since it is larger than the sum of its proper divisors (6710186).

12890194 is an equidigital number, since it uses as much as digits as its factorization.

12890194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88364.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 12890194 is about 3590.2916316088. The cubic root of 12890194 is about 234.4695686874.

The spelling of 12890194 in words is "twelve million, eight hundred ninety thousand, one hundred ninety-four".