Properties of the Number 28670

Twenty-Eight Thousand Six Hundred Seventy

Basics

Value: 28669 → 28670 → 28671

Parity: even

Prime: No

Previous Prime: 28669

Next Prime: 28687

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 47 × 61

Divisors: 1, 2, 5, 10, 47, 61, 94, 122, 235, 305

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111111111110

Octal: 67776

Duodecimal: 14712

Hexadecimal: 6ffe

Square: 821968900

Square Root: 169.32217811025228

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

a(n) = ∑_k=0..n A026615(n, k). A26622

Number of partitions of n such that the number of even parts is a part and the number of odd parts is not a part. A240577

Divide natural numbers in groups with prime(n) elements and add together. A34957

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 601", based on the 5-celled von Neumann neighborhood. A283221

a(n) = 7·2ⁿ - 2. A176448

a(n) is the smallest even number not congruent to 1 modulo 3 that starts a (2n+1)-element alternating sequence of x/2 and (3x+1) iterations ending in the maximum of its Collatz trajectory. A277215

Number of acyclic edge covers of the complete bipartite graph K_n,2. A328890

Molien series for A₉. A8632

a(n) = prime(n) * Fibonacci(n). A64497

a(n) = 5*(3·n+1)*(9·n+8)/2 (n>=0). A304508