Properties of the Number -19798

Nineteen Thousand Seven Hundred Ninety-Eight

Basics

Value: -19799 → -19798 → -19797

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 × 19 × 521

Divisors: 1, 2, 19, 38, 521, 1042, 9899, 19798

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -100110101010110

Octal: -46526

Duodecimal: -B55A

Hexadecimal: -4d56

Square: 391960804

Square Root: 140.70536592468676

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

a(n) = n*(14·n - 11). A195021

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise. A235573

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise. A235962

Number of partitions of n into 8 distinct and relatively prime parts. A340719

a(n) = (n-2)*(14·n-39) for n > 2, otherwise a(n) = n. A195030

Number of partitions of n such that the least part occurs with even multiplicity. A96374

Indices of primes occurring in A107798. A107799

Numbers m such that the sum of the first k odd primes = m-th odd prime. A179321

Number of (n+1) X (1+1) 0..1 arrays with the difference of the upper and lower median value of each 2 X 2 subblock in lexicographically nondecreasing order rowwise and columnwise. A235566

a(n) = n*(n² + 3·n + 5)/3. A145069