13906856 has 8 divisors (see below), whose sum is σ = 26075370. Its totient is φ = 6953424.

The previous prime is 13906843. The next prime is 13906859. The reversal of 13906856 is 65860931.

It can be written as a sum of positive squares in only one way, i.e., 12040900 + 1865956 = 3470^2 + 1366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13906859) 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 as a sum of consecutive naturals, namely, 869171 + ... + 869186.

Almost surely, 2^13906856 is an apocalyptic number.

It is an amenable number.

13906856 is a deficient number, since it is larger than the sum of its proper divisors (12168514).

13906856 is a wasteful number, since it uses less digits than its factorization.

13906856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738363 (or 1738359 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 13906856 is about 3729.1897243235. The cubic root of 13906856 is about 240.4785359538.

The spelling of 13906856 in words is "thirteen million, nine hundred six thousand, eight hundred fifty-six".