13981308 has 36 divisors (see below), whose sum is σ = 35862120. Its totient is φ = 4236320.

The previous prime is 13981307. The next prime is 13981313. The reversal of 13981308 is 80318931.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3363 + ... + 6266.

It is an arithmetic number, because the mean of its divisors is an integer number (996170).

Almost surely, 2^13981308 is an apocalyptic number.

It is an amenable number.

13981308 is an abundant number, since it is smaller than the sum of its proper divisors (21880812).

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

13981308 is a wasteful number, since it uses less digits than its factorization.

13981308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9658 (or 9645 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 13981308 is about 3739.1587289122. The cubic root of 13981308 is about 240.9069158374.

Multiplying 13981308 by its sum of digits (33), we get a palindrome (461383164).

The spelling of 13981308 in words is "thirteen million, nine hundred eighty-one thousand, three hundred eight".