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13871297 = 111816967
BaseRepresentation
bin110100111010…
…100011000001
3222002201211202
4310322203001
512022340142
61213150545
7225622046
oct64724301
928081752
1013871297
117914790
12478b455
132b4898b
141bb11cd
151340032
hexd3a8c1

13871297 has 8 divisors (see below), whose sum is σ = 15218112. Its totient is φ = 12538800.

The previous prime is 13871293. The next prime is 13871357. The reversal of 13871297 is 79217831.

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 13871297 - 22 = 13871293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13871297.

It is not an unprimeable number, because it can be changed into a prime (13871293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493 + ... + 5474.

It is an arithmetic number, because the mean of its divisors is an integer number (1902264).

Almost surely, 213871297 is an apocalyptic number.

It is an amenable number.

13871297 is a deficient number, since it is larger than the sum of its proper divisors (1346815).

13871297 is a wasteful number, since it uses less digits than its factorization.

13871297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7159.

The product of its digits is 21168, while the sum is 38.

The square root of 13871297 is about 3724.4190150948. The cubic root of 13871297 is about 240.2733979290.

The spelling of 13871297 in words is "thirteen million, eight hundred seventy-one thousand, two hundred ninety-seven".

Divisors: 1 11 181 1991 6967 76637 1261027 13871297