13378738 has 8 divisors (see below), whose sum is σ = 20495232. Its totient is φ = 6546996.

The previous prime is 13378733. The next prime is 13378741. The reversal of 13378738 is 83787331.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13378738.

It is not an unprimeable number, because it can be changed into a prime (13378733) 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, 71070 + ... + 71257.

It is an arithmetic number, because the mean of its divisors is an integer number (2561904).

Almost surely, 2^13378738 is an apocalyptic number.

13378738 is a deficient number, since it is larger than the sum of its proper divisors (7116494).

13378738 is a wasteful number, since it uses less digits than its factorization.

13378738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142376.

The product of its digits is 84672, while the sum is 40.

The square root of 13378738 is about 3657.6957227194. The cubic root of 13378738 is about 237.3950812661.

The spelling of 13378738 in words is "thirteen million, three hundred seventy-eight thousand, seven hundred thirty-eight".