13172166 has 32 divisors (see below), whose sum is σ = 33454080. Its totient is φ = 3763368.

The previous prime is 13172141. The next prime is 13172167. The reversal of 13172166 is 66127131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13172167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17046 + ... + 17801.

It is an arithmetic number, because the mean of its divisors is an integer number (1045440).

Almost surely, 2^13172166 is an apocalyptic number.

13172166 is an abundant number, since it is smaller than the sum of its proper divisors (20281914).

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

13172166 is a wasteful number, since it uses less digits than its factorization.

13172166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34865 (or 34859 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 13172166 is about 3629.3478753076. The cubic root of 13172166 is about 236.1669196408.

Adding to 13172166 its reverse (66127131), we get a palindrome (79299297).

The spelling of 13172166 in words is "thirteen million, one hundred seventy-two thousand, one hundred sixty-six".