13981016 has 32 divisors (see below), whose sum is σ = 30996000. Its totient is φ = 5784576.

The previous prime is 13981013. The next prime is 13981027. The reversal of 13981016 is 61018931.

It is a happy number.

13981016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 13981016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981013) 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, 2681 + ... + 5928.

It is an arithmetic number, because the mean of its divisors is an integer number (968625).

Almost surely, 2^13981016 is an apocalyptic number.

It is an amenable number.

13981016 is an abundant number, since it is smaller than the sum of its proper divisors (17014984).

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

13981016 is a wasteful number, since it uses less digits than its factorization.

13981016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8651 (or 8647 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 13981016 is about 3739.1196824921. The cubic root of 13981016 is about 240.9052387099.

Adding to 13981016 its reverse (61018931), we get a palindrome (74999947).

The spelling of 13981016 in words is "thirteen million, nine hundred eighty-one thousand, sixteen".