13720790 has 8 divisors (see below), whose sum is σ = 24697440. Its totient is φ = 5488312.

The previous prime is 13720789. The next prime is 13720801. The reversal of 13720790 is 9702731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686030 + ... + 686049.

It is an arithmetic number, because the mean of its divisors is an integer number (3087180).

Almost surely, 2^13720790 is an apocalyptic number.

13720790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13720790 is a deficient number, since it is larger than the sum of its proper divisors (10976650).

13720790 is a wasteful number, since it uses less digits than its factorization.

13720790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372086.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 13720790 is about 3704.1584739317. The cubic root of 13720790 is about 239.4012272799.

The spelling of 13720790 in words is "thirteen million, seven hundred twenty thousand, seven hundred ninety".