Properties of the Number 30195

Thirty Thousand One Hundred Ninety-Five

Basics

Value: 30194 → 30195 → 30196

Parity: odd

Prime: No

Previous Prime: 30187

Next Prime: 30197

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 11 × 61

Divisors: 1, 3, 5, 9, 11, 15, 33, 45, 55, 61

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010111110011

Octal: 72763

Duodecimal: 15583

Hexadecimal: 75f3

Square: 911738025

Square Root: 173.76708549089497

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 ways to write n as an ordered sum of 10 nonzero triangular numbers. A340955

Coefficients in the expansion of C²/B³, in Watson's notation of page 106. A160462

Number of 4 element sets of distinct integer sided rectangles that fill an n X n square. A387171

a(n) = a(n-1) + ∑_0<k<=n/5 a(n-5k) with a(0)=1. A113444

Like 4-white numbers but with blocks of 4 starting at left. A277397

Primitive values n such that the square with opposite corners (0,0) and (n,n) contains a point (x,y) with integer coordinates, with 0 < x,y < n, at an integer distance from three of the four corners. A260549

a(n) = 3·a(n-1) + 3·a(n-2), a(0)=0, a(1)=1. A30195

Least k such that 33/8- sum{(h³)/3^h, h = 1..k} < 1/4ⁿ. A248636