13173172 has 12 divisors (see below), whose sum is σ = 23081380. Its totient is φ = 6578496.

The previous prime is 13173143. The next prime is 13173197. The reversal of 13173172 is 27137131.

It can be written as a sum of positive squares in 2 ways, for example, as 8271376 + 4901796 = 2876^2 + 2214^2 .

It is a congruent 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, 3058 + ... + 5974.

Almost surely, 2^13173172 is an apocalyptic number.

It is an amenable number.

13173172 is a deficient number, since it is larger than the sum of its proper divisors (9908208).

13173172 is a wasteful number, since it uses less digits than its factorization.

13173172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050 (or 4048 counting only the distinct ones).

The product of its digits is 882, while the sum is 25.

The square root of 13173172 is about 3629.4864650526. The cubic root of 13173172 is about 236.1729317594.

It can be divided in two parts, 1317 and 3172, that added together give a square (4489 = 67²).

The spelling of 13173172 in words is "thirteen million, one hundred seventy-three thousand, one hundred seventy-two".