172104 has 32 divisors (see below), whose sum is σ = 440640. Its totient is φ = 56000.
The previous prime is 172097. The next prime is 172127. The reversal of 172104 is 401271.
It is a hoax number, since the sum of its digits (15) coincides with the sum of the digits of its distinct prime factors.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1654 + ... + 1754.
It is an arithmetic number, because the mean of its divisors is an integer number (13770).
2172104 is an apocalyptic number.
It is an amenable number.
172104 is an abundant number, since it is smaller than the sum of its proper divisors (268536).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
172104 is a wasteful number, since it uses less digits than its factorization.
172104 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 181 (or 177 counting only the distinct ones).
The product of its (nonzero) digits is 56, while the sum is 15.
The square root of 172104 is about 414.8541912528. The cubic root of 172104 is about 55.6241842240.
Adding to 172104 its reverse (401271), we get a palindrome (573375).
It can be divided in two parts, 172 and 104, that added together give a triangular number (276 = T23).
The spelling of 172104 in words is "one hundred seventy-two thousand, one hundred four", and thus it is an iban number.
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.080 sec. • engine limits •