Properties of the Number 28779

Twenty-Eight Thousand Seven Hundred Seventy-Nine

Basics

Value: 28778 → 28779 → 28780

Parity: odd

Prime: No

Previous Prime: 28771

Next Prime: 28789

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 53 × 181

Divisors: 1, 3, 53, 159, 181, 543, 9593, 28779

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 111000001101011

Octal: 70153

Duodecimal: 147A3

Hexadecimal: 706b

Square: 828230841

Square Root: 169.64374435858224

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

Partial sums of A045618. A45889

Number of connected components of n faces of the truncated icosahedron up to the 120 rotations and reflections of the truncated icosahedron. A384109

Irregular triangular array read by rows: T(n,k) = number of non-isomorphic unlabeled connected graphs with loops on n nodes and with k edges. A283755

L.g.f.: -log(∏_k>=1 (1 - k·x^k)^k) = ∑_n>=1 a(n)*xⁿ/n. A296601

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 31 ones. A31799

Numbers k whose decimal representation, read as a base-18 value and divided by k, yields an integer. A32567

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 33", based on the 5-celled von Neumann neighborhood. A269812

Triangle read by rows: T(n,k) is the number of nondecreasing Dyck paths of semilength n, having k distinct valley levels (n>=1, k>=0). A121463

T(n,k) = Number of n X k binary arrays without the pattern 0 1 diagonally, vertically, antidiagonally or horizontally. A188553

Array read by ascending antidiagonals where row n contains the second partial sums of row n of Pascal's triangle. A210489