12626378 has 4 divisors (see below), whose sum is σ = 18939570. Its totient is φ = 6313188.

The previous prime is 12626377. The next prime is 12626381. The reversal of 12626378 is 87362621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87362621 = 163 ⋅535967.

It can be written as a sum of positive squares in only one way, i.e., 11785489 + 840889 = 3433^2 + 917^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12626371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3156593 + ... + 3156596.

Almost surely, 2^12626378 is an apocalyptic number.

12626378 is a deficient number, since it is larger than the sum of its proper divisors (6313192).

12626378 is an equidigital number, since it uses as much as digits as its factorization.

12626378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6313191.

The product of its digits is 24192, while the sum is 35.

The square root of 12626378 is about 3553.3615070803. The cubic root of 12626378 is about 232.8589468432.

Adding to 12626378 its reverse (87362621), we get a palindrome (99988999).

The spelling of 12626378 in words is "twelve million, six hundred twenty-six thousand, three hundred seventy-eight".