13405172 has 12 divisors (see below), whose sum is σ = 25591776. Its totient is φ = 6093240.

The previous prime is 13405151. The next prime is 13405187. The reversal of 13405172 is 27150431.

It is a congruent 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, 152288 + ... + 152375.

It is an arithmetic number, because the mean of its divisors is an integer number (2132648).

Almost surely, 2^13405172 is an apocalyptic number.

It is an amenable number.

13405172 is a deficient number, since it is larger than the sum of its proper divisors (12186604).

13405172 is a wasteful number, since it uses less digits than its factorization.

13405172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304678 (or 304676 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 13405172 is about 3661.3074167570. The cubic root of 13405172 is about 237.5513285183.

The spelling of 13405172 in words is "thirteen million, four hundred five thousand, one hundred seventy-two".