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Properties of the Number -19097

Nineteen Thousand Ninety-Seven

Basics

Value: -19098 → -19097 → -19096

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 13 2 × 113

Divisors: 1, 13, 113, 169, 1469, 19097

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100101010011001

Octal: -45231

Duodecimal: -B075

Hexadecimal: -4a99

Square: 364695409

Square Root: 138.19189556555045

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

Number of solenoidal flows (flow in = flow out) in a 3 X 3 square array with integer velocities -n .. n. A68722
NSW pseudoprimes: odd composite numbers k such that A002315((k-1)/2) == 1 (mod k). A330276
Pell pseudoprimes: odd composite numbers n such that P(n)-Kronecker(2,n) is divisible by n. A99011
Pentagonal numbers with prime indices. A116995
Intersection of A099011 and A327651. A327652
Pentagonal numbers (A000326) whose digit reversal is a semiprime (A001358). A115709
MM-numbers of labeled multi-hypergraphs with no singletons spanning an initial interval of positive integers. A320464
Composite numbers k coprime to 8 such that k divides Pell(k - Kronecker(8,k)), Pell = A000129. A327651
a(n) = dotproduct(1,2,...,n)*(3,4,...,n,1,2). A26037
a(n) = 10·n2 - 6·n + 1. A87348