13905830 has 16 divisors (see below), whose sum is σ = 26503200. Its totient is φ = 5235072.

The previous prime is 13905811. The next prime is 13905833. The reversal of 13905830 is 3850931.

13905830 is nontrivially palindromic in base 9.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13905793 and 13905802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13905833) 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 7 ways as a sum of consecutive naturals, for example, 40730 + ... + 41069.

It is an arithmetic number, because the mean of its divisors is an integer number (1656450).

Almost surely, 2^13905830 is an apocalyptic number.

13905830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13905830 is a deficient number, since it is larger than the sum of its proper divisors (12597370).

13905830 is a wasteful number, since it uses less digits than its factorization.

13905830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81823.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 13905830 is about 3729.0521583909. The cubic root of 13905830 is about 240.4726219153.

The spelling of 13905830 in words is "thirteen million, nine hundred five thousand, eight hundred thirty".