Properties of the Number -1540540

Five Hundred Forty Thousand Five Hundred Forty

Basics

Value: -1540541 → -1540540 → -1540539

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 17 × 23 × 197

Divisors: 1, 2, 4, 5, 10, 17, 20, 23, 34, 46

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101111000000110111100

Octal: -5700674

Duodecimal: -623624

Hexadecimal: -1781bc

Square: 2373263491600

Square Root: 1241.184917729828

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

Let A(0) = 1, B(0) = 0 and C(0) = 0. Let B(n+1) = ∑_{k = 0..n} binomial(n,k)* A(k), C(n+1) = ∑_{k = 0..n} binomial(n,k)*B(k) and A(n+1) = ∑_{k = 0..n} binomial(n,k)*C(k). This entry gives the sequence C(n). A143817

Numbers that have exactly 9 representations as a k-gonal number, P(n,k) = n*((k-2)*n - (k-4))/2, k and n >= 3. A321159