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13882731 = 3231731163
BaseRepresentation
bin110100111101…
…010101101011
3222010022112020
4310331111223
512023221411
61213315523
7226000302
oct64752553
928108466
1013882731
117922335
124795ba3
132b50c45
141bb5439
151343606
hexd3d56b

13882731 has 16 divisors (see below), whose sum is σ = 19443456. Its totient is φ = 8794016.

The previous prime is 13882717. The next prime is 13882741. The reversal of 13882731 is 13728831.

It is a cyclic number.

It is not a de Polignac number, because 13882731 - 217 = 13751659 is a prime.

It is a super-2 number, since 2×138827312 = 385460440036722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13882692 and 13882701.

It is not an unprimeable number, because it can be changed into a prime (13882741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11356 + ... + 12518.

It is an arithmetic number, because the mean of its divisors is an integer number (1215216).

Almost surely, 213882731 is an apocalyptic number.

13882731 is the 2357-th centered pentagonal number.

13882731 is a deficient number, since it is larger than the sum of its proper divisors (5560725).

13882731 is a wasteful number, since it uses less digits than its factorization.

13882731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362.

The product of its digits is 8064, while the sum is 33.

The square root of 13882731 is about 3725.9537034161. The cubic root of 13882731 is about 240.3393982827.

The spelling of 13882731 in words is "thirteen million, eight hundred eighty-two thousand, seven hundred thirty-one".