Properties of the Number 28744

Twenty-Eight Thousand Seven Hundred Forty-Four

Basics

Value: 28743 → 28744 → 28745

Parity: even

Prime: No

Previous Prime: 28729

Next Prime: 28751

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 3593

Divisors: 1, 2, 4, 8, 3593, 7186, 14372, 28744

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 111000001001000

Octal: 70110

Duodecimal: 14774

Hexadecimal: 7048

Square: 826217536

Square Root: 169.54055562018192

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

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2X2 subblock. A235893

T(n,k)=Number of nXk 0..3 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors. A203846

Sums of distinct powers of 13. A33049

a(n) = A027941(n) + A027941(n+6). A153466

Linear recurrence with a(n) = 3a(n-1) - a(n-2) + 2 = 4a(n-1) - 4a(n-2) + a(n-3). Full sequence for A153466. A153819

Number of nX3 0..3 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors. A203841

Number of nX5 0..3 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors. A203843

Number of (n+1) X (4+1) 0..3 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2 X 2 subblock. A235889

Number of (n+1) X (6+1) 0..3 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2 X 2 subblock. A235891

Nonsquares mod 31. A28744