13216858 has 16 divisors (see below), whose sum is σ = 20954880. Its totient is φ = 6239376.

The previous prime is 13216843. The next prime is 13216873. The reversal of 13216858 is 85861231.

13216858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13216843) and next prime (13216873).

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, 1816 + ... + 5452.

It is an arithmetic number, because the mean of its divisors is an integer number (1309680).

Almost surely, 2^13216858 is an apocalyptic number.

13216858 is a deficient number, since it is larger than the sum of its proper divisors (7738022).

13216858 is a wasteful number, since it uses less digits than its factorization.

13216858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741.

The product of its digits is 11520, while the sum is 34.

The square root of 13216858 is about 3635.4996905515. The cubic root of 13216858 is about 236.4337159871.

The spelling of 13216858 in words is "thirteen million, two hundred sixteen thousand, eight hundred fifty-eight".