Properties of the Number -155287

One Hundred Fifty-Five Thousand Two Hundred Eighty-Seven

Basics

Value: -155288 → -155287 → -155286

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 11 × 19 × 743

Divisors: 1, 11, 19, 209, 743, 8173, 14117, 155287

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100101111010010111

Octal: -457227

Duodecimal: -75A47

Hexadecimal: -25e97

Square: 24114052369

Square Root: 394.0647154973406

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

RMS numbers: numbers n such that root mean square of divisors of n is an integer. A140480

Expansion of ∏_k>=1 1/((1-x^3·k-1)*(1-x^3·k-2))^k. A262883

For 1<=x<=n, 1<=y<=n, write gcd(x,y) = u·x+v·y with u,v minimal; a(n) = sum of the values of u²+v². A345434

Primitive RMS numbers: RMS numbers which are not the product of two smaller RMS numbers. A141813

Numbers m such that the arithmetic mean and the quadratic mean (the root mean square) of the divisors of m are both integers. A327055

Composite RMS numbers: composite numbers c such that root mean square of divisors of c is an integer. A158287

a(n+1) = floor(a(n) * ∑_k=0..n 1/a(k)^s), where s = ∑_k>=0 1/a(k)^s and a(0)=1; s = 2.260568736857767... A80135