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172104 = 23371101
BaseRepresentation
bin101010000001001000
322202002020
4222001020
521001404
63404440
71314522
oct520110
9282066
10172104
11108339
1283720
136044a
1446a12
1535ed9
hex2a048

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.

Divisors: 1 2 3 4 6 8 12 24 71 101 142 202 213 284 303 404 426 568 606 808 852 1212 1704 2424 7171 14342 21513 28684 43026 57368 86052 172104