Properties of the Number -233289

Two Hundred Thirty-Three Thousand Two Hundred Eighty-Nine

Basics

Value: -233290 → -233289 → -233288

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 ² × 23 ²

Divisors: 1, 3, 7, 9, 21, 23, 49, 63, 69, 147

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111000111101001001

Octal: -707511

Duodecimal: -B3009

Hexadecimal: -38f49

Square: 54423757521

Square Root: 483

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

Denominator of 1/n²-1/(n+2)². A171522

a(n) = ( n*(n+2) )². A99761

Number of maximal irredundant sets in the n X n bishop graph. A291060

a(n) = (5·n² + 1)*n² / 6. A8354

a(n) = (4·n² - 1)². A69075

Odd squares k, multiples of 3 and non-multiples of 5, such that σ(k)/k >= 5/3. A388016

Triangle T(n, k, m) = b(n,m)/(b(k,m)*b(n-k,m)), where b(n, k) = ∏_j=1..n (1 - ChebyshevT(j, k+1)²), b(n, 0) = n!, and m = 10, read by rows. A156646

Odd half-Zumkeller numbers. A246199

Number of numbers below 10ⁿ with nonzero multiplicative digital root 9. A51829

Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically. A208114