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13172079 = 34793419
BaseRepresentation
bin110010001111…
…110101101111
3220210012200210
4302033311233
511333001304
61150153503
7216650364
oct62176557
926705623
1013172079
117487418
1244b2893
13296263b
141a6c46b
151252c89
hexc8fd6f

13172079 has 8 divisors (see below), whose sum is σ = 17936640. Its totient is φ = 8594456.

The previous prime is 13172053. The next prime is 13172083. The reversal of 13172079 is 97027131.

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

It is a cyclic number.

It is not a de Polignac number, because 13172079 - 29 = 13171567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13172099) 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, 46569 + ... + 46850.

It is an arithmetic number, because the mean of its divisors is an integer number (2242080).

Almost surely, 213172079 is an apocalyptic number.

13172079 is a deficient number, since it is larger than the sum of its proper divisors (4764561).

13172079 is an equidigital number, since it uses as much as digits as its factorization.

13172079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93469.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 13172079 is about 3629.3358896636. The cubic root of 13172079 is about 236.1663996917.

The spelling of 13172079 in words is "thirteen million, one hundred seventy-two thousand, seventy-nine".

Divisors: 1 3 47 141 93419 280257 4390693 13172079