Properties of the Number 16969

Sixteen Thousand Nine Hundred Sixty-Nine

Basics

Value: 16968 → 16969 → 16970

Parity: odd

Prime: No

Previous Prime: 16963

Next Prime: 16979

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 71 × 239

Divisors: 1, 71, 239, 16969

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 100001001001001

Octal: 41111

Duodecimal: 99A1

Hexadecimal: 4249

Square: 287946961

Square Root: 130.26511428621248

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) = a(n-1) + a(m) for n >= 4, where m = 2·n - 2 - 2^p+1 and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = a(2) = a(3) = 1. A50027

Numbers n such that the decimal number concat(3,n) is a square. A273358

The least nonsquare number s having exactly n twos in the periodic part of the continued fraction of sqrt(s). A206582

a(n) = 288·n² - 168·n - 119. A118059

Numbers of the form ∏_k=i..j prime(k) - ∑_k=i..j prime(k) where i < j. A387946

Take pairs (a, b), sorted on a, such that T(a)+T(b)=concatenation of a and b, where T(k) is the k-th triangular number A000217(k). Sequence gives values of a. A96031

First differences of A293160. A295783

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 80 ones. A31848

Number of prime unlabeled T₀ topologies (i.e., prime T₀ homeomorphism classes) on n points. A28856

Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,0,3. A37732