Properties of the Number -218451

Two Hundred Eighteen Thousand Four Hundred Fifty-One

Basics

Value: -218452 → -218451 → -218450

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 72817

Divisors: 1, 3, 72817, 218451

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110101010101010011

Octal: -652523

Duodecimal: -A6503

Hexadecimal: -35553

Square: 47720839401

Square Root: 467.38741959962937

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

Generalized Jacobsthal numbers. A84640

a(n) = 2·a(n-1) + a(n-2) - 2·a(n-3). A140359

a(n) = (5·2ⁿ - 2*(-1)ⁿ - 9)/3. A173078

Q-residue of the triangle A051162, where Q is the triangular array (t(i,j)) given by t(i,j)=1. (See Comments.) A193658

a(n) = 10*(4ⁿ - 1)/3 + 1. A321421

Number of binary strings of length n with no substrings equal to 0101, 0110, or 1010. A164509

a(n) is the sum of squares of the numbers in row n of array T given by A026148. A27335

a(n) = (5·2ⁿ + 7*(-1)ⁿ)/3. A344109