Properties of the Number 16845

Sixteen Thousand Eight Hundred Forty-Five

Basics

Value: 16844 → 16845 → 16846

Parity: odd

Prime: No

Previous Prime: 16843

Next Prime: 16871

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 1123

Divisors: 1, 3, 5, 15, 1123, 3369, 5615, 16845

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100000111001101

Octal: 40715

Duodecimal: 98B9

Hexadecimal: 41cd

Square: 283754025

Square Root: 129.7882891481354

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

Number of sets of exactly n positive integers <= n+5 having a square element sum. A281968

Number of free 4-dimensional polyhypercubes with n cells, allowing edge-, face-, and 3-face-connections. A365365

Number of n X 7 0..1 arrays with diagonals and antidiagonals unimodal and rows nondecreasing. A223948

Number of 6 X n 0..1 arrays with diagonals and antidiagonals unimodal and rows nondecreasing. A223953

Numbers of quasi-espalier polycubes of a given volume (number of atomic cells). A230118

a(n) is the smallest k such that k!'s prime(n)-smooth part is less than its prime(n+1)-rough part. A360316

T(n,k)=Number of nXk 0..1 arrays with diagonals and antidiagonals unimodal and rows nondecreasing. A223949

a(n) = (4n+3)⁹. A16845