12972194 has 8 divisors (see below), whose sum is σ = 19511580. Its totient is φ = 6468336.

The previous prime is 12972149. The next prime is 12972217. The reversal of 12972194 is 49127921.

It can be written as a sum of positive squares in 2 ways, for example, as 12866569 + 105625 = 3587^2 + 325^2 .

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

It is an unprimeable number.

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, 7949 + ... + 9440.

Almost surely, 2^12972194 is an apocalyptic number.

12972194 is a deficient number, since it is larger than the sum of its proper divisors (6539386).

12972194 is a wasteful number, since it uses less digits than its factorization.

12972194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17764.

The product of its digits is 9072, while the sum is 35.

The square root of 12972194 is about 3601.6932129208. The cubic root of 12972194 is about 234.9657049697.

The spelling of 12972194 in words is "twelve million, nine hundred seventy-two thousand, one hundred ninety-four".