Properties of the Number 16616

Sixteen Thousand Six Hundred Sixteen

Basics

Value: 16615 → 16616 → 16617

Parity: even

Prime: No

Previous Prime: 16607

Next Prime: 16619

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 31 × 67

Divisors: 1, 2, 4, 8, 31, 62, 67, 124, 134, 248

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100000011101000

Octal: 40350

Duodecimal: 9748

Hexadecimal: 40e8

Square: 276091456

Square Root: 128.90306435457614

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

Trajectory of n under the Reverse and Add! operation carried out in base 2 does not reach a palindrome and (presumably) does not join the trajectory of any term m < n. A75252

Numbers using only digits 1 and 6. A284293

a(n) is the number of edges formed by n-secting the angles of an octagon. A335771

Numbers k such that φ(k) + φ(k+1) divides σ(k) + σ(k+1). A67282

G.f.: exp( ∑_n>=1 A001511(n)*2^A001511(n)*xⁿ/n ) where A001511(n) equals the 2-adic valuation of 2n. A183036

Number of ordered triples (w,x,y) with all terms in {1,...,n} and w⁴>x⁴+y⁴. A211653

a(n) = smallest k such that the base-2 Reverse and Add! trajectory of A075252(n) joins the trajectory of k. A92211

Years >= 1801 in which Christmas falls in Sukkot. A222419

a(n) = T(n,0) + T(n,1) + ... + T(n,2n), T given by A027113. A27115

Abs(square of n-th prime minus cube of n-1). A151911