13720750 has 32 divisors (see below), whose sum is σ = 26080704. Its totient is φ = 5404000.

The previous prime is 13720739. The next prime is 13720753. The reversal of 13720750 is 5702731.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13720753) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17364 + ... + 18136.

It is an arithmetic number, because the mean of its divisors is an integer number (815022).

Almost surely, 2^13720750 is an apocalyptic number.

13720750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13720750 is a deficient number, since it is larger than the sum of its proper divisors (12359954).

13720750 is an equidigital number, since it uses as much as digits as its factorization.

13720750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 13720750 is about 3704.1530745907. The cubic root of 13720750 is about 239.4009946388.

The spelling of 13720750 in words is "thirteen million, seven hundred twenty thousand, seven hundred fifty".