13738440 has 32 divisors (see below), whose sum is σ = 41215680. Its totient is φ = 3663552.

The previous prime is 13738423. The next prime is 13738441. The reversal of 13738440 is 4483731.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13738398 and 13738407.

It is not an unprimeable number, because it can be changed into a prime (13738441) 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, 57124 + ... + 57363.

It is an arithmetic number, because the mean of its divisors is an integer number (1287990).

Almost surely, 2^13738440 is an apocalyptic number.

13738440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13738440 is an abundant number, since it is smaller than the sum of its proper divisors (27477240).

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

13738440 is a wasteful number, since it uses less digits than its factorization.

13738440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114501 (or 114497 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 13738440 is about 3706.5401657071. The cubic root of 13738440 is about 239.5038360736.

The spelling of 13738440 in words is "thirteen million, seven hundred thirty-eight thousand, four hundred forty".