13856834 has 4 divisors (see below), whose sum is σ = 20785254. Its totient is φ = 6928416.

The previous prime is 13856831. The next prime is 13856839. The reversal of 13856834 is 43865831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9030025 + 4826809 = 3005^2 + 2197^2 .

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13856831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3464207 + ... + 3464210.

Almost surely, 2^13856834 is an apocalyptic number.

13856834 is a deficient number, since it is larger than the sum of its proper divisors (6928420).

13856834 is an equidigital number, since it uses as much as digits as its factorization.

13856834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928419.

The product of its digits is 69120, while the sum is 38.

The square root of 13856834 is about 3722.4768635950. The cubic root of 13856834 is about 240.1898613373.

The spelling of 13856834 in words is "thirteen million, eight hundred fifty-six thousand, eight hundred thirty-four".