Properties of the Number 2839

Two Thousand Eight Hundred Thirty-Nine

Basics

Value: 2838 → 2839 → 2840

Parity: odd

Prime: No

Previous Prime: 2837

Next Prime: 2843

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 17 × 167

Divisors: 1, 17, 167, 2839

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

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Representations

Binary: 101100010111

Octal: 5427

Duodecimal: 1787

Hexadecimal: b17

Square: 8059921

Square Root: 53.28226721902888

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

Heptagonal numbers (or 7-gonal numbers): n*(5·n-3)/2. A566

Centered triangular numbers: a(n) = 3·n*(n-1)/2 + 1. A5448

a(n) = A026626(2·n, n-2). A26629

Number of series-reduced locally disjoint rooted trees with n unlabeled leaves. A316697

Discriminants of imaginary quadratic fields with class number 26 (negated). A351664

Position of first zero in the n-th differences of the squarefree numbers (A005117), or 0 if it does not appear. A377042

Numbers k with the property that it is possible to write the base 2 expansion of k as concat(a₂,b₂), with a₂>0 and b₂>0 such that, converting a₂ and b₂ to base 10 as a and b, we have σ(a + b) = σ(k). A258843

Sum of the fifth largest parts in the partitions of n into 7 squarefree parts. A308956

Numbers that are the sum of nine fourth powers in three or more ways. A345587

Numbers that are the sum of nine fourth powers in exactly three ways. A345845