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13238117 = 19696743
BaseRepresentation
bin110010011111…
…111101100101
3220220120021122
4302133331211
511342104432
61151423325
7220344044
oct62377545
926816248
1013238117
117521aa2
124524b45
132986709
141a8855b
151267612
hexc9ff65

13238117 has 4 divisors (see below), whose sum is σ = 13934880. Its totient is φ = 12541356.

The previous prime is 13238101. The next prime is 13238129. The reversal of 13238117 is 71183231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13238117 - 24 = 13238101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13238167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348353 + ... + 348390.

It is an arithmetic number, because the mean of its divisors is an integer number (3483720).

Almost surely, 213238117 is an apocalyptic number.

It is an amenable number.

13238117 is a deficient number, since it is larger than the sum of its proper divisors (696763).

13238117 is an equidigital number, since it uses as much as digits as its factorization.

13238117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696762.

The product of its digits is 1008, while the sum is 26.

The square root of 13238117 is about 3638.4223229306. The cubic root of 13238117 is about 236.5604140736.

The spelling of 13238117 in words is "thirteen million, two hundred thirty-eight thousand, one hundred seventeen".

Divisors: 1 19 696743 13238117