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Properties of the Number 27810

Twenty-Seven Thousand Eight Hundred Ten

Basics

Value: 27809 → 27810 → 27811

Parity: even

Prime: No

Previous Prime: 27809

Next Prime: 27817

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 3 × 5 × 103

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 27

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110010100010

Octal: 66242

Duodecimal: 14116

Hexadecimal: 6ca2

Square: 773396100

Square Root: 166.76330531624757

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 disconnected regular simple graphs on n vertices with girth at least 4. A185214
G.f. A(x) satisfies: A(x) = x + x2 * A(x/(1 - 5·x)) / (1 - 5·x). A351132
Numbers k such that 80·Rk + 1 is prime, where Rk = 11...1 is the repunit (A002275) of length k. A56664
Consecutive states of the linear congruential pseudo-random number generator (625·s + 6571) mod 31104 when started at s=1. A385279
Numbers a = b + c where a, b, and c contain the same decimal digits. A203024
a(1) = 24603, a(n) = n·a(n-1) but products that are not in A010784 are first reduced as in A320486 (see comments); continue until zero is reached. A321148
a(n) is the smallest number that can be partitioned into n ways as the sum of two brilliant numbers (A078972). A338474
Numbers that are the sum of some number of consecutive prime cubes. A352423
a(n) = ∑k=0..m (k+1) * A026148(n, k), where m=0 for n=1; m=n+1 for n >= 2. A27333
Numbers k such that 161·2k-1 is prime. A50832