13938670 has 16 divisors (see below), whose sum is σ = 25159968. Its totient is φ = 5559840.

The previous prime is 13938581. The next prime is 13938671. The reversal of 13938670 is 7683931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13938671) 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, 2215 + ... + 5725.

It is an arithmetic number, because the mean of its divisors is an integer number (1572498).

Almost surely, 2^13938670 is an apocalyptic number.

13938670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13938670 is a deficient number, since it is larger than the sum of its proper divisors (11221298).

13938670 is a wasteful number, since it uses less digits than its factorization.

13938670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 13938670 is about 3733.4528254687. The cubic root of 13938670 is about 240.6617730947.

It can be divided in two parts, 139 and 38670, that added together give a square (38809 = 197²).

The spelling of 13938670 in words is "thirteen million, nine hundred thirty-eight thousand, six hundred seventy".