13897305 has 32 divisors (see below), whose sum is σ = 24952320. Its totient is φ = 7338240.

The previous prime is 13897291. The next prime is 13897307. The reversal of 13897305 is 50379831.

It is not a de Polignac number, because 13897305 - 2⁶ = 13897241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13897305.

It is not an unprimeable number, because it can be changed into a prime (13897307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14800 + ... + 15710.

It is an arithmetic number, because the mean of its divisors is an integer number (779760).

Almost surely, 2^13897305 is an apocalyptic number.

13897305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13897305 is a deficient number, since it is larger than the sum of its proper divisors (11055015).

13897305 is a wasteful number, since it uses less digits than its factorization.

13897305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 13897305 is about 3727.9089312911. The cubic root of 13897305 is about 240.4234711114.

The spelling of 13897305 in words is "thirteen million, eight hundred ninety-seven thousand, three hundred five".