13720732 has 12 divisors (see below), whose sum is σ = 24597216. Its totient is φ = 6692960.

The previous prime is 13720709. The next prime is 13720739. The reversal of 13720732 is 23702731.

13720732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13720697 and 13720706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13720739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41668 + ... + 41995.

It is an arithmetic number, because the mean of its divisors is an integer number (2049768).

Almost surely, 2^13720732 is an apocalyptic number.

It is an amenable number.

13720732 is a deficient number, since it is larger than the sum of its proper divisors (10876484).

13720732 is a wasteful number, since it uses less digits than its factorization.

13720732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83708 (or 83706 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 13720732 is about 3704.1506448847. The cubic root of 13720732 is about 239.4008899502.

The spelling of 13720732 in words is "thirteen million, seven hundred twenty thousand, seven hundred thirty-two".