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Properties of the Number 12890

Twelve Thousand Eight Hundred Ninety

Basics

Value: 12889 → 12890 → 12891

Parity: even

Prime: No

Previous Prime: 12889

Next Prime: 12893

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 1289

Divisors: 1, 2, 5, 10, 1289, 2578, 6445, 12890

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11001001011010

Octal: 31132

Duodecimal: 7562

Hexadecimal: 325a

Square: 166152100

Square Root: 113.53413583587978

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

T(n,k)=Number of 0..k arrays x(0..n+1) of n+2 elements without any interior element greater than both neighbors or less than both neighbors. A200871
Numbers n such that m + (sum of digits in base-3 representation of m) = n has exactly four solutions. A230856
Repeated integer partitions or nested integer partitions. A131408
Number of partitions of n such that (number parts having multiplicity 1) is not a part and (number of 1s) is not a part. A241509
Total number of firings in a certain chip-firing game that starts with 2n chips and is described in the comments. A389565
Numbers k such that 30·Rk + 7 is prime, where Rk = 11...1 is the repunit (A002275) of length k. A56680
Number of free 4-dimensional polyhypercubes with n cells, allowing edge- and face-connections. A365358
Convolution of the Floor-Sqrt transform of central binomial coefficients. A192657
Number of 0..5 arrays x(0..n+1) of n+2 elements without any interior element greater than both neighbors or less than both neighbors. A200868
Number of 0..n arrays x(0..6) of 7 elements without any interior element greater than both neighbors or less than both neighbors. A200875