13223858 has 8 divisors (see below), whose sum is σ = 21002652. Its totient is φ = 6222976.

The previous prime is 13223843. The next prime is 13223863. The reversal of 13223858 is 85832231.

It can be written as a sum of positive squares in 2 ways, for example, as 11042329 + 2181529 = 3323^2 + 1477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194435 + ... + 194502.

Almost surely, 2^13223858 is an apocalyptic number.

13223858 is a deficient number, since it is larger than the sum of its proper divisors (7778794).

13223858 is a wasteful number, since it uses less digits than its factorization.

13223858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388956.

The product of its digits is 11520, while the sum is 32.

The square root of 13223858 is about 3636.4622918435. The cubic root of 13223858 is about 236.4754491512.

The spelling of 13223858 in words is "thirteen million, two hundred twenty-three thousand, eight hundred fifty-eight".