13776920 has 16 divisors (see below), whose sum is σ = 30998160. Its totient is φ = 5510752.

The previous prime is 13776901. The next prime is 13776929. The reversal of 13776920 is 2967731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13776929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172172 + ... + 172251.

It is an arithmetic number, because the mean of its divisors is an integer number (1937385).

Almost surely, 2^13776920 is an apocalyptic number.

13776920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13776920 is an abundant number, since it is smaller than the sum of its proper divisors (17221240).

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

13776920 is a wasteful number, since it uses less digits than its factorization.

13776920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344434 (or 344430 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 13776920 is about 3711.7273606772. The cubic root of 13776920 is about 239.7272364138.

The spelling of 13776920 in words is "thirteen million, seven hundred seventy-six thousand, nine hundred twenty".