Properties of the Number -9730

Seven Hundred Thirty

Basics

Value: -9731 → -9730 → -9729

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 7 × 139

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 139, 278

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011000000010

Octal: -23002

Duodecimal: -576A

Hexadecimal: -2602

Square: 94672900

Square Root: 98.64076236526155

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

Triangular numbers (A000217) with prime indices. A34953

Convolution of A000203 with itself. A385

Triangular matrix T, read by rows, where row n of T equals row (n-1) of Tⁿ⁺¹ with an appended '1'. A121412

Triangle T(n,k) (n >= 2, k = 3..n+floor(n/2)) giving number of bicoverings of an n-set with k blocks. A59443

Triangular matrix T, read by rows, where row n equals row (n-1) of T^n-1 after appending '1' for the main diagonal. A101479

a(n) = 2·n*(4·n - 1). A14635

Even pseudoprimes to base 11. A90084

Numbers divisible by prime(d) for each digit d in their base-9 representation, none of which may be zero. A256879

Numbers k such that k | 10^k + 10. A15902

Triangle read by rows: T(n,k) gives number of r-bicoverings of an n-set with k blocks, n >= 2, k = 3..n+floor(n/2). A60052