Properties of the Number 2881

Two Thousand Eight Hundred Eighty-One

Basics

Value: 2880 → 2881 → 2882

Parity: odd

Prime: No

Previous Prime: 2879

Next Prime: 2887

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 43 × 67

Divisors: 1, 43, 67, 2881

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101101000001

Octal: 5501

Duodecimal: 1801

Hexadecimal: b41

Square: 8300161

Square Root: 53.67494760127857

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) = (3·n² - n - 2)/2. A115067

Number of subsets of {1..n} without all distinct lengths of maximal runs (increasing by 1). A384176

Centered 24-gonal numbers. A69190

Number of ordered triples (a, b, c) with gcd(a, b, c) = 1 and 1 <= {a, b, c} <= n. A71778

L-toothpick sequence (see Comment lines for definition). A172310

Triangle, read by rows, that transforms diagonals in the table of coefficients in the successive iterations of x+x² (cf. A122888). A135080

a(n) = 3·n² - 2. A100536

Number of integer partitions of n that cannot be partitioned into a set of sets. A382078

Number of face-connected components of tetragonal disphenoidal cells in the tetragonal disphenoidal honeycomb up to translation, rotation, and reflection. A385024

a(n) = n-th concentric 12-gonal number. A195143