Properties of the Number -187489

One Hundred Eighty-Seven Thousand Four Hundred Eighty-Nine

Basics

Value: -187490 → -187489 → -187488

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 37

Digital Root: 1

Palindrome: No

Factorization: 433 ²

Divisors: 1, 433, 187489

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101101110001100001

Octal: -556141

Duodecimal: -90601

Hexadecimal: -2dc61

Square: 35152125121

Square Root: 433

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) = (11·n + 4)². A17438

Squares of the form prime(k)*prime(k+1) + 2·prime(k+1). A108604

A nonlinear recurrence of order 3: a(1)=a(2)=a(3)=1; a(n)=(a(n-1)+a(n-2))²/a(n-3). A72882

Unsigned member r=-6 of the family of Chebyshev sequences S_r(n) defined in A092184. A98306

σ(n)-n is a perfect square associated with A049226. A49228

Numbers k such that concat(k, d(k)) and concat(d(k), k) are both prime, where d(k) is the number of divisors of k. A284643

Let k be the least integer such that n² + ∑_m=1..k m² is a perfect square, then a(n) is the resulting square. A65611

Squares of the form 6p+7 for p prime (A110015) that are squares of a prime. A110586

Nontrivial prime powers (A025475) which are a sum of a smaller nontrivial prime power and a perfect cube. A226232

Powers of a prime lucky number (A031157) but excluding lucky numbers (A000959). A57609