13378736 has 40 divisors (see below), whose sum is σ = 31188480. Its totient is φ = 5431104.

The previous prime is 13378733. The next prime is 13378741. The reversal of 13378736 is 63787331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 13378736.

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 7 ways as a sum of consecutive naturals, for example, 1016 + ... + 5271.

It is an arithmetic number, because the mean of its divisors is an integer number (779712).

Almost surely, 2^13378736 is an apocalyptic number.

13378736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13378736 is an abundant number, since it is smaller than the sum of its proper divisors (17809744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13378736 is a wasteful number, since it uses less digits than its factorization.

13378736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321 (or 6315 counting only the distinct ones).

The product of its digits is 63504, while the sum is 38.

The square root of 13378736 is about 3657.6954493232. The cubic root of 13378736 is about 237.3950694366.

The spelling of 13378736 in words is "thirteen million, three hundred seventy-eight thousand, seven hundred thirty-six".