13738840 has 32 divisors (see below), whose sum is σ = 31751280. Its totient is φ = 5346432.

The previous prime is 13738717. The next prime is 13738849. The reversal of 13738840 is 4883731.

It is a junction number, because it is equal to n+sod(n) for n = 13738796 and 13738805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13738849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3162 + ... + 6121.

Almost surely, 2^13738840 is an apocalyptic number.

13738840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13738840 is an abundant number, since it is smaller than the sum of its proper divisors (18012440).

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

13738840 is a wasteful number, since it uses less digits than its factorization.

13738840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9331 (or 9327 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 13738840 is about 3706.5941239904. The cubic root of 13738840 is about 239.5061604667.

The spelling of 13738840 in words is "thirteen million, seven hundred thirty-eight thousand, eight hundred forty".