Properties of the Number 28675

Twenty-Eight Thousand Six Hundred Seventy-Five

Basics

Value: 28674 → 28675 → 28676

Parity: odd

Prime: No

Previous Prime: 28669

Next Prime: 28687

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 ² × 31 × 37

Divisors: 1, 5, 25, 31, 37, 155, 185, 775, 925, 1147

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000000000011

Octal: 70003

Duodecimal: 14717

Hexadecimal: 7003

Square: 822255625

Square Root: 169.33694221876098

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

Triangle of Mahonian numbers T(n,k): coefficients in expansion of ∏_i=0..n-1 (1 + x + ... + xⁱ), where k ranges from 0 to A000217(n-1). Also enumerates permutations by their major index. A8302

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) is the n-th q-factorial number for q=-k. A384454

S₁₁ sequence in partition of integers > 1 described in A240521. A241024

Number of integer partitions of n whose rounded-down mean is 2. A363745

a(n) = 7·2ⁿ + 3. A164285

q-factorial numbers for q=-6. A15019

Partial sums of A034953(n). A85739

a(n) = ∑_{-n<i<n, -n<j<n, gcd{i,j}=2} (n-|i|)*(n-|j|)/8. A331773

Strong pseudoprimes to base 99. A20325

45-gonal numbers: n*(43·n-41)/2. A98924