13968138 has 16 divisors (see below), whose sum is σ = 28020960. Its totient is φ = 4641936.

The previous prime is 13968131. The next prime is 13968151. The reversal of 13968138 is 83186931.

It is a junction number, because it is equal to n+sod(n) for n = 13968096 and 13968105.

It is not an unprimeable number, because it can be changed into a prime (13968131) 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, 1273 + ... + 5436.

It is an arithmetic number, because the mean of its divisors is an integer number (1751310).

Almost surely, 2^13968138 is an apocalyptic number.

13968138 is an abundant number, since it is smaller than the sum of its proper divisors (14052822).

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

13968138 is a wasteful number, since it uses less digits than its factorization.

13968138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7061.

The product of its digits is 31104, while the sum is 39.

The square root of 13968138 is about 3737.3972226671. The cubic root of 13968138 is about 240.8312495546.

The spelling of 13968138 in words is "thirteen million, nine hundred sixty-eight thousand, one hundred thirty-eight".