Properties of the Number 16399

Sixteen Thousand Three Hundred Ninety-Nine

Basics

Value: 16398 → 16399 → 16400

Parity: odd

Prime: No

Previous Prime: 16381

Next Prime: 16411

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 23 ² × 31

Divisors: 1, 23, 31, 529, 713, 16399

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100000000001111

Octal: 40017

Duodecimal: 95A7

Hexadecimal: 400f

Square: 268927201

Square Root: 128.0585803450905

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) = 2ⁿ + n + 1. A5126

a(n) = smallest number that leads to a new fixed point under the base-2 Kaprekar map of A164884. A164887

a(n) = smallest number that leads to a new cycle under the base-4 Kaprekar map of A165012. A165029

Square array A(n,k), read by descending antidiagonals, where A(1, k) = A388984(k), and for n > 1, A(n, k) = A003961(A(n-1), k). A388981

T(n,k)=Number of nXk 0..2 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other. A201432

a(n) is the number of 4 element sets of distinct integer sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units. A389392

Expansion of ∏_k>=1 (1 - x^k)^sigma₂(k). A288389

Positions of 0 in A288132; complement of A288134. A288133

Primeshift array for primegap shift: Square array read by antidiagonals: A(1,col) = 3·col, and for row > 1, A(row,col) = A389084(A(row-1,col)). A389086

Number of compositions (ordered partitions) of n into an odd number of squares. A339419