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172913 = 1347283
BaseRepresentation
bin101010001101110001
322210012012
4222031301
521013123
63412305
71320056
oct521561
9283165
10172913
11108a04
1284095
1360920
144702d
1536378
hex2a371

172913 has 8 divisors (see below), whose sum is σ = 190848. Its totient is φ = 155664.

The previous prime is 172883. The next prime is 172933. The reversal of 172913 is 319271.

172913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172913 - 26 = 172849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470 + ... + 752.

It is an arithmetic number, because the mean of its divisors is an integer number (23856).

2172913 is an apocalyptic number.

172913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

172913 is a deficient number, since it is larger than the sum of its proper divisors (17935).

172913 is a wasteful number, since it uses less digits than its factorization.

172913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343.

The product of its digits is 378, while the sum is 23.

The square root of 172913 is about 415.8280894793. The cubic root of 172913 is about 55.7112045508.

The spelling of 172913 in words is "one hundred seventy-two thousand, nine hundred thirteen".

Divisors: 1 13 47 283 611 3679 13301 172913