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Properties of the Number 16869

Sixteen Thousand Eight Hundred Sixty-Nine

Basics

Value: 16868 → 16869 → 16870

Parity: odd

Prime: No

Previous Prime: 16843

Next Prime: 16871

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 5623

Divisors: 1, 3, 5623, 16869

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100000111100101

Octal: 40745

Duodecimal: 9919

Hexadecimal: 41e5

Square: 284563161

Square Root: 129.88071450373224

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

Smallest composite that when added to sum of prime factors reaches a prime after n iterations. A50710
Number of length n inversion sequences avoiding the patterns 010, 120, and 210. A279558
Least k for the Theodorus spiral to complete n revolutions. A72895
First element of first run of exactly n consecutive numbers not of form x2+y2. A104271
Smallest term of the first run of at least n consecutive integers which are not sums of 2 squares. A260157
a(n) = (a(n-1) * a(n-3) - (-1)n * a(n-2)2) / a(n-4) with a(0) = 1, a(1) = 1, a(2) = 0, a(3) = 1, a(6) = 2. A247370
a(n) = (8·n3 + 12·n2 + 4·n - 9)/3. A358035
Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 86. A31584
Number of partitions of n into parts not of the form 19k, 19k+2 or 19k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 8 are greater than 1. A35971
a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = 2·n - 3 - 2p+1 and p is the unique integer such that 2p < n - 1 <= 2p+1, starting with a(1) = 1, a(2) = 3, and a(3) = 4. A49928