12378994 has 16 divisors (see below), whose sum is σ = 19656000. Its totient is φ = 5830704.

The previous prime is 12378917. The next prime is 12378997. The reversal of 12378994 is 49987321.

12378994 = T₁₁₃₂ + T₁₁₃₃ + ... + T₁₁₅₀.

It is a self number, because there is not a number n which added to its sum of digits gives 12378994.

It is not an unprimeable number, because it can be changed into a prime (12378997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6744 + ... + 8380.

It is an arithmetic number, because the mean of its divisors is an integer number (1228500).

Almost surely, 2^12378994 is an apocalyptic number.

12378994 is a deficient number, since it is larger than the sum of its proper divisors (7277006).

12378994 is a wasteful number, since it uses less digits than its factorization.

12378994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857.

The product of its digits is 108864, while the sum is 43.

The square root of 12378994 is about 3518.3794565112. The cubic root of 12378994 is about 231.3281319625.

The spelling of 12378994 in words is "twelve million, three hundred seventy-eight thousand, nine hundred ninety-four".