Properties of the Number 28133

Twenty-Eight Thousand One Hundred Thirty-Three

Basics

Value: 28132 → 28133 → 28134

Parity: odd

Prime: No

Previous Prime: 28123

Next Prime: 28151

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 7 × 4019

Divisors: 1, 7, 4019, 28133

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110111100101

Octal: 66745

Duodecimal: 14345

Hexadecimal: 6de5

Square: 791465689

Square Root: 167.72894800838642

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

Consider the family of multigraphs enriched by the species of partitions. Sequence gives the triangle read by rows giving coefficients of polynomials arising from enumeration of those multigraphs on n arcs of 7 different colors. A98362

a(n) = p² - sum of digits of p^p, where p = prime(n). A140499

Numbers k such that for some r we have φ(1) + ... + φ(k - 1) = φ(k + 1) + ... + φ(k + r), where φ(i) = A000010(i). A358936

Expansion of 1/((1-4x)(1-6x)(1-7x)(1-11x)). A28133