13925720 has 32 divisors (see below), whose sum is σ = 33177600. Its totient is φ = 5242368.

The previous prime is 13925701. The next prime is 13925753. The reversal of 13925720 is 2752931.

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 7 ways as a sum of consecutive naturals, for example, 9560 + ... + 10919.

It is an arithmetic number, because the mean of its divisors is an integer number (1036800).

Almost surely, 2^13925720 is an apocalyptic number.

13925720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13925720 is an abundant number, since it is smaller than the sum of its proper divisors (19251880).

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

13925720 is a wasteful number, since it uses less digits than its factorization.

13925720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20507 (or 20503 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 13925720 is about 3731.7181029654. The cubic root of 13925720 is about 240.5872194577.

The spelling of 13925720 in words is "thirteen million, nine hundred twenty-five thousand, seven hundred twenty".