13920776 has 8 divisors (see below), whose sum is σ = 26101470. Its totient is φ = 6960384.

The previous prime is 13920743. The next prime is 13920779. The reversal of 13920776 is 67702931.

It can be written as a sum of positive squares in only one way, i.e., 13498276 + 422500 = 3674^2 + 650^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13920779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 870041 + ... + 870056.

Almost surely, 2^13920776 is an apocalyptic number.

It is an amenable number.

13920776 is a deficient number, since it is larger than the sum of its proper divisors (12180694).

13920776 is a wasteful number, since it uses less digits than its factorization.

13920776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740103 (or 1740099 counting only the distinct ones).

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

The square root of 13920776 is about 3731.0556147021. The cubic root of 13920776 is about 240.5587444727.

The spelling of 13920776 in words is "thirteen million, nine hundred twenty thousand, seven hundred seventy-six".