Properties of the Number 28917

Twenty-Eight Thousand Nine Hundred Seventeen

Basics

Value: 28916 → 28917 → 28918

Parity: odd

Prime: No

Previous Prime: 28909

Next Prime: 28921

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 7 × 17

Divisors: 1, 3, 7, 9, 17, 21, 27, 51, 63, 81

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000011110101

Octal: 70365

Duodecimal: 14899

Hexadecimal: 70f5

Square: 836192889

Square Root: 170.04999264922066

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

Array read by antidiagonals: T(m,n) = number of (undirected) paths in the grid graph P_m X P_n. A288518

a(n) = concatenation of n² and n. A55436

Augmented amicable pairs (larger member of each pair). A15630

Numbers that are the sum of four third powers in seven or more ways. A345150

a(n) = 100·n² + n. A55438

Numbers that are the sum of four third powers in exactly seven ways. A345151

Antidiagonal sums of square array A082011. A82014

Number of solutions to x² + y² + z² + w² <= n², where x, y, z, w are positive odd integers. A349611

Number of (undirected) paths in the grid graph P₃ X P_n. A288527

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 20. A31698