Properties of the Number 16656

Sixteen Thousand Six Hundred Fifty-Six

Basics

Value: 16655 → 16656 → 16657

Parity: even

Prime: No

Previous Prime: 16651

Next Prime: 16657

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ⁴ × 3 × 347

Divisors: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100000100010000

Octal: 40420

Duodecimal: 9780

Hexadecimal: 4110

Square: 277422336

Square Root: 129.05812643921342

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 nXk 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A281563

Number of 3-almost primes t such that 2ⁿ < t <= 2ⁿ⁺¹. A120034

G.f. A(x) satisfies A(x) = 1 / (1 - x * (1 + x + x² + x³) * A(x⁴)). A367653

Positions of 3's in A234323. A234804

Sums of 3 distinct powers of 4. A38471

Enumeration of partial sums of 1 + [1,2] + [2,3] + [1,2] + [2,3] + ... A89640

a(n) = sum(d divides n, 2^n/d-1 - 1 ), omitting d=1 and d=n. A137323

Partial sums of A174928. A174929

Number of nX7 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A281562

Number of 3Xn 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A281565