Properties of the Number 12998

Twelve Thousand Nine Hundred Ninety-Eight

Basics

Value: 12997 → 12998 → 12999

Parity: even

Prime: No

Previous Prime: 12983

Next Prime: 13001

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 67 × 97

Divisors: 1, 2, 67, 97, 134, 194, 6499, 12998

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11001011000110

Octal: 31306

Duodecimal: 7632

Hexadecimal: 32c6

Square: 168948004

Square Root: 114.00877159236477

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

Positive integers k such that k²⁰ + 1 is semiprime (A001358). A105282

Total area of the shadows of the three views of a three-dimensional version of the shell model of partitions with n shells. A207380

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to a prime. A251459

Numbers n such that there is no triangular n-gonal number greater than 1. A188892

Largest achievable determinant of a 3 X 3 matrix whose elements are 9 distinct integers chosen from the range -n...n. A97693

Numbers k such that k times φ(k) is a palindrome. A115891

Partial sums of A253088. A255048

Numbers x = concat(a,b) such that b^a begins with the digits of x. A266817

a(0) = 1, a(n) = 9·n² + 2 for n>0. A10002

a(n) = ∑_k=1..n sigma₃(k) * floor(n/k). A356043