Properties of the Number -30287

Thirty Thousand Two Hundred Eighty-Seven

Basics

Value: -30288 → -30287 → -30286

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 31 × 977

Divisors: 1, 31, 977, 30287

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111011001001111

Octal: -73117

Duodecimal: -1563B

Hexadecimal: -764f

Square: 917302369

Square Root: 174.03160632482826

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+1) is the smallest number > a(n) such that the digits of a(n)² are all (with multiplicity) contained in the digits of a(n+1)², with a(0)=1. A14563

Semiprimes of the form C(n) + T(n) where C(n) and T(n) are the n-th cube and triangular numbers. A240884

a(n) = n*(2·n² + n + 1)/2. A85786

Semiprimes generated by the polynomial 2·n² + 29. A241554

Expansion of ∑_k>=1 k³ * x^k/(1 - x^k)³. A366135

Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+x+y>1. A211613

Composite numbers of the form 2·k² + 29. A352949

Numbers k such that 2^k + 3^k-1 is prime. A82400

Numbers k such that k + (largest digit of k)! is a palindromic prime. A95920