13981436 has 24 divisors (see below), whose sum is σ = 28078176. Its totient is φ = 5967360.

The previous prime is 13981427. The next prime is 13981441. The reversal of 13981436 is 63418931.

It is a junction number, because it is equal to n+sod(n) for n = 13981396 and 13981405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6980 + ... + 8756.

It is an arithmetic number, because the mean of its divisors is an integer number (1169924).

Almost surely, 2^13981436 is an apocalyptic number.

It is an amenable number.

13981436 is an abundant number, since it is smaller than the sum of its proper divisors (14096740).

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

13981436 is a wasteful number, since it uses less digits than its factorization.

13981436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069 (or 2067 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 13981436 is about 3739.1758450225. The cubic root of 13981436 is about 240.9076510092.

The spelling of 13981436 in words is "thirteen million, nine hundred eighty-one thousand, four hundred thirty-six".