13812405 has 8 divisors (see below), whose sum is σ = 22099872. Its totient is φ = 7366608.

The previous prime is 13812361. The next prime is 13812419. The reversal of 13812405 is 50421831.

13812405 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13812405 - 2⁹ = 13811893 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460399 + ... + 460428.

It is an arithmetic number, because the mean of its divisors is an integer number (2762484).

Almost surely, 2^13812405 is an apocalyptic number.

13812405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13812405 is a deficient number, since it is larger than the sum of its proper divisors (8287467).

13812405 is an equidigital number, since it uses as much as digits as its factorization.

13812405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920835.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 13812405 is about 3716.5044060246. The cubic root of 13812405 is about 239.9328805364.

The spelling of 13812405 in words is "thirteen million, eight hundred twelve thousand, four hundred five".