Properties of the Number 2798

Two Thousand Seven Hundred Ninety-Eight

Basics

Value: 2797 → 2798 → 2799

Parity: even

Prime: No

Previous Prime: 2797

Next Prime: 2801

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 1399

Divisors: 1, 2, 1399, 2798

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 101011101110

Octal: 5356

Duodecimal: 1752

Hexadecimal: aee

Square: 7828804

Square Root: 52.896124621752776

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

Numbers k such that (11·10^k + 19)/3 is prime. A270339

a(n) = ∑_k<=n A000203(k)*(n-k+1), where A000203(m) is the sum of divisors of m. A175254

Number of integer partitions of n of even length whose greatest multiplicity is at most half their length. A338914

a(n) = a(n-3) + a(n-4), with a(0)=1, a(1)=a(2)=0, a(3)=1. A17817

Sum of the first n Lucas numbers, in ascending order, as bases, with the same, in descending order, as exponents. A113154

Number of compositions of n such that two adjacent parts are not equal modulo 2. A62200

T(n,k) is the number of n-bead necklaces labeled with numbers -k..k allowing reversal, with sum zero and first differences in -k..k. A209032

Number of palindromic plane trees with n nodes. A319436

Number of maximal subsets of {1..n} containing n such that every pair of distinct elements has a different quotient. A325869

Semiprimes of the form prime + 1. A77068