12997378 has 8 divisors (see below), whose sum is σ = 19675260. Its totient is φ = 6438960.

The previous prime is 12997357. The next prime is 12997379. The reversal of 12997378 is 87379921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 1046529 = 3457^2 + 1023^2 .

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 (12997379) 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, 29593 + ... + 30028.

Almost surely, 2^12997378 is an apocalyptic number.

12997378 is a deficient number, since it is larger than the sum of its proper divisors (6677882).

12997378 is a wasteful number, since it uses less digits than its factorization.

12997378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59732.

The product of its digits is 190512, while the sum is 46.

The square root of 12997378 is about 3605.1876511494. The cubic root of 12997378 is about 235.1176595052.

The spelling of 12997378 in words is "twelve million, nine hundred ninety-seven thousand, three hundred seventy-eight".