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13871741 = 131067057
BaseRepresentation
bin110100111010…
…101001111101
3222002202110012
4310322221331
512022343431
61213153005
7225623252
oct64725175
928082405
1013871741
117915054
12478b765
132b48c40
141bb1429
15134022b
hexd3aa7d

13871741 has 4 divisors (see below), whose sum is σ = 14938812. Its totient is φ = 12804672.

The previous prime is 13871717. The next prime is 13871749. The reversal of 13871741 is 14717831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8791225 + 5080516 = 2965^2 + 2254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13871741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13871698 and 13871707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13871749) 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, 533516 + ... + 533541.

It is an arithmetic number, because the mean of its divisors is an integer number (3734703).

Almost surely, 213871741 is an apocalyptic number.

It is an amenable number.

13871741 is a deficient number, since it is larger than the sum of its proper divisors (1067071).

13871741 is a wasteful number, since it uses less digits than its factorization.

13871741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067070.

The product of its digits is 4704, while the sum is 32.

The square root of 13871741 is about 3724.4786212301. The cubic root of 13871741 is about 240.2759615021.

The spelling of 13871741 in words is "thirteen million, eight hundred seventy-one thousand, seven hundred forty-one".

Divisors: 1 13 1067057 13871741