Properties of the Number 28913

Twenty-Eight Thousand Nine Hundred Thirteen

Basics

Value: 28912 → 28913 → 28914

Parity: odd

Prime: No

Previous Prime: 28909

Next Prime: 28921

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 29 × 997

Divisors: 1, 29, 997, 28913

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000011110001

Octal: 70361

Duodecimal: 14895

Hexadecimal: 70f1

Square: 835961569

Square Root: 170.03823099526764

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

Centered octahemioctahedral numbers: a(n) = (4·n³+24·n²+8·n+3)/3. A274974

a(n) is the least k such that n·k-1 has exactly n prime factors, counted with multiplicity. A366857

G.f. A(x) satisfies: (1 - x) = A(x)*A(x²)²*A(x³)³*A(x⁴)⁴* ... *A(x^k)^k* ... A307656

First differences of A007952. A28913

a(n) = floor((n·2ⁿ⁺¹+2)/(2·n-(-1)ⁿ+3)) - floor((n·2ⁿ⁺¹-2)/(2·n-(-1)ⁿ+3)). A278907