13491906 has 8 divisors (see below), whose sum is σ = 26983824. Its totient is φ = 4497300.

The previous prime is 13491893. The next prime is 13491937. The reversal of 13491906 is 60919431.

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

13491906 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1124320 + ... + 1124331.

It is an arithmetic number, because the mean of its divisors is an integer number (3372978).

Almost surely, 2^13491906 is an apocalyptic number.

13491906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13491906 is a wasteful number, since it uses less digits than its factorization.

13491906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248656.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 13491906 is about 3673.1329951419. The cubic root of 13491906 is about 238.0625615258.

The spelling of 13491906 in words is "thirteen million, four hundred ninety-one thousand, nine hundred six".