13685730 has 32 divisors (see below), whose sum is σ = 33191424. Its totient is φ = 3611136.

The previous prime is 13685717. The next prime is 13685741. The reversal of 13685730 is 3758631.

It is a happy number.

13685730 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 = 13685691 and 13685700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (1037232).

Almost surely, 2^13685730 is an apocalyptic number.

13685730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13685730 is an abundant number, since it is smaller than the sum of its proper divisors (19505694).

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

13685730 is a wasteful number, since it uses less digits than its factorization.

13685730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 13685730 is about 3699.4229279713. The cubic root of 13685730 is about 239.1971436406.

The spelling of 13685730 in words is "thirteen million, six hundred eighty-five thousand, seven hundred thirty".