13400378 has 8 divisors (see below), whose sum is σ = 20793780. Its totient is φ = 6469120.

The previous prime is 13400371. The next prime is 13400389. The reversal of 13400378 is 87300431.

It can be written as a sum of positive squares in 2 ways, for example, as 12061729 + 1338649 = 3473^2 + 1157^2 .

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 (13400371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115463 + ... + 115578.

Almost surely, 2^13400378 is an apocalyptic number.

13400378 is a deficient number, since it is larger than the sum of its proper divisors (7393402).

13400378 is a wasteful number, since it uses less digits than its factorization.

13400378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231072.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 13400378 is about 3660.6526740460. The cubic root of 13400378 is about 237.5230071894.

The spelling of 13400378 in words is "thirteen million, four hundred thousand, three hundred seventy-eight".