13780912 has 20 divisors (see below), whose sum is σ = 26761680. Its totient is φ = 6874688.

The previous prime is 13780903. The next prime is 13780919. The reversal of 13780912 is 21908731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13780919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9789 + ... + 11107.

It is an arithmetic number, because the mean of its divisors is an integer number (1338084).

Almost surely, 2^13780912 is an apocalyptic number.

It is an amenable number.

13780912 is a deficient number, since it is larger than the sum of its proper divisors (12980768).

13780912 is a wasteful number, since it uses less digits than its factorization.

13780912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980 (or 1974 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 13780912 is about 3712.2650767422. The cubic root of 13780912 is about 239.7503886305.

The spelling of 13780912 in words is "thirteen million, seven hundred eighty thousand, nine hundred twelve".