13856023 has 4 divisors (see below), whose sum is σ = 14150880. Its totient is φ = 13561168.

The previous prime is 13856009. The next prime is 13856027. The reversal of 13856023 is 32065831.

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

It is a cyclic number.

It is not a de Polignac number, because 13856023 - 2²¹ = 11758871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13855982 and 13856000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147358 + ... + 147451.

It is an arithmetic number, because the mean of its divisors is an integer number (3537720).

Almost surely, 2^13856023 is an apocalyptic number.

13856023 is a deficient number, since it is larger than the sum of its proper divisors (294857).

13856023 is an equidigital number, since it uses as much as digits as its factorization.

13856023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294856.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 13856023 is about 3722.3679291548. The cubic root of 13856023 is about 240.1851753756.

The spelling of 13856023 in words is "thirteen million, eight hundred fifty-six thousand, twenty-three".