13791730 has 8 divisors (see below), whose sum is σ = 24825132. Its totient is φ = 5516688.

The previous prime is 13791721. The next prime is 13791731. The reversal of 13791730 is 3719731.

It can be written as a sum of positive squares in 2 ways, for example, as 11895601 + 1896129 = 3449^2 + 1377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13791692 and 13791701.

It is not an unprimeable number, because it can be changed into a prime (13791731) 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 3 ways as a sum of consecutive naturals, for example, 689577 + ... + 689596.

Almost surely, 2^13791730 is an apocalyptic number.

13791730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13791730 is a deficient number, since it is larger than the sum of its proper divisors (11033402).

13791730 is a wasteful number, since it uses less digits than its factorization.

13791730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379180.

The product of its (nonzero) digits is 3969, while the sum is 31.

The square root of 13791730 is about 3713.7218528048. The cubic root of 13791730 is about 239.8131068148.

The spelling of 13791730 in words is "thirteen million, seven hundred ninety-one thousand, seven hundred thirty".