13870378 has 8 divisors (see below), whose sum is σ = 20862468. Its totient is φ = 6916224.

The previous prime is 13870343. The next prime is 13870387. The reversal of 13870378 is 87307831.

13870378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13816089 + 54289 = 3717^2 + 233^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8551 + ... + 10042.

Almost surely, 2^13870378 is an apocalyptic number.

13870378 is a deficient number, since it is larger than the sum of its proper divisors (6992090).

13870378 is a wasteful number, since it uses less digits than its factorization.

13870378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18968.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 13870378 is about 3724.2956381039. The cubic root of 13870378 is about 240.2680916209.

The spelling of 13870378 in words is "thirteen million, eight hundred seventy thousand, three hundred seventy-eight".