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Properties of the Number 28518

Twenty-Eight Thousand Five Hundred Eighteen

Basics

Value: 28517 → 28518 → 28519

Parity: even

Prime: No

Previous Prime: 28517

Next Prime: 28537

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 7 2 × 97

Divisors: 1, 2, 3, 6, 7, 14, 21, 42, 49, 97

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111101100110

Octal: 67546

Duodecimal: 14606

Hexadecimal: 6f66

Square: 813276324

Square Root: 168.87273314540747

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 n such that Bernoulli number Bn has denominator 1806. A272139
Sum of prime divisors of n (with repetition) is one less than the sum of prime divisors (with repetition) of n+1. A228126
Series for first parallel moment of square lattice bond percolation near a wall. A56575
a(n) = Fibonacci(prime(n)) - prime(Fibonacci(n)). A93062
Numbers k that divide φ(k)2 + σ(k)2. A68484
Eventual period of a single cell in rule 169 cellular automaton in a cyclic universe of width n. A334505
Numbers k such that φ(k + 8) | σ(k) + 8. A15873
Numbers k such that reverse(gpf(k)) = gpf(k+1), where gpf(n) = A006530(n); a(1)=1. A71844
Weight distribution of [98,49,16] binary extended quadratic-residue (or QR) code. A145683
Number of tilings of a 5 X n rectangle using straight (3 X 1) trominoes and 2 X 2 tiles. A219969