13751720 has 32 divisors (see below), whose sum is σ = 31471200. Its totient is φ = 5406528.

The previous prime is 13751681. The next prime is 13751737. The reversal of 13751720 is 2715731.

13751720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13751720.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554 + ... + 5273.

It is an arithmetic number, because the mean of its divisors is an integer number (983475).

Almost surely, 2^13751720 is an apocalyptic number.

13751720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13751720 is an abundant number, since it is smaller than the sum of its proper divisors (17719480).

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

13751720 is a wasteful number, since it uses less digits than its factorization.

13751720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5897 (or 5893 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 13751720 is about 3708.3311610481. The cubic root of 13751720 is about 239.5809818211.

The spelling of 13751720 in words is "thirteen million, seven hundred fifty-one thousand, seven hundred twenty".