172171104 has 144 divisors (see below), whose sum is σ = 556921008. Its totient is φ = 46276608.

The previous prime is 172171093. The next prime is 172171151. The reversal of 172171104 is 401171271.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78892 + ... + 81044.

It is an arithmetic number, because the mean of its divisors is an integer number (3867507).

Almost surely, 2^172171104 is an apocalyptic number.

172171104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172171104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278460504).

172171104 is an abundant number, since it is smaller than the sum of its proper divisors (384749904).

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

172171104 is a wasteful number, since it uses less digits than its factorization.

172171104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2182 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 24.

The square root of 172171104 is about 13121.3987059307. The cubic root of 172171104 is about 556.3141264453.

The spelling of 172171104 in words is "one hundred seventy-two million, one hundred seventy-one thousand, one hundred four".