13689788 has 12 divisors (see below), whose sum is σ = 27379632. Its totient is φ = 5867040.

The previous prime is 13689787. The next prime is 13689799. The reversal of 13689788 is 88798631.

It is a happy number.

13689788 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13689787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244433 + ... + 244488.

It is an arithmetic number, because the mean of its divisors is an integer number (2281636).

Almost surely, 2^13689788 is an apocalyptic number.

It is an amenable number.

13689788 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13689788 is a wasteful number, since it uses less digits than its factorization.

13689788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488932 (or 488930 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 13689788 is about 3699.9713512404. The cubic root of 13689788 is about 239.2207830102.

The spelling of 13689788 in words is "thirteen million, six hundred eighty-nine thousand, seven hundred eighty-eight".