13713730 has 16 divisors (see below), whose sum is σ = 26137080. Its totient is φ = 5162752.

The previous prime is 13713701. The next prime is 13713731. The reversal of 13713730 is 3731731.

13713730 = 151² + 152² + ... + 354².

It can be written as a sum of positive squares in 4 ways, for example, as 10556001 + 3157729 = 3249^2 + 1777^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13713695 and 13713704.

It is not an unprimeable number, because it can be changed into a prime (13713731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40165 + ... + 40504.

Almost surely, 2^13713730 is an apocalyptic number.

13713730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13713730 is a deficient number, since it is larger than the sum of its proper divisors (12423350).

13713730 is a wasteful number, since it uses less digits than its factorization.

13713730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80693.

The product of its (nonzero) digits is 1323, while the sum is 25.

The square root of 13713730 is about 3703.2053683262. The cubic root of 13713730 is about 239.3601591237.

The spelling of 13713730 in words is "thirteen million, seven hundred thirteen thousand, seven hundred thirty".