Properties of the Number -69831

Sixty-Nine Thousand Eight Hundred Thirty-One

Basics

Value: -69832 → -69831 → -69830

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7759

Divisors: 1, 3, 9, 7759, 23277, 69831

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10001000011000111

Octal: -210307

Duodecimal: -344B3

Hexadecimal: -110c7

Square: 4876368561

Square Root: 264.2555581250847

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) = ∑_k=1..n (-1)^k-1 * binomial(floor(n/k)+3,4). A366659

Number of ways to select 4 numbers from the set of the first n natural numbers avoiding 3-term arithmetic progressions. A300760

Number of integers in base n having exactly four distinct digits such that the number formed by the consecutive subsequence of the initial j digits is divisible by j for all j in {1,2,3,4}. A333469

Numbers k such that 221·2^k+1 is prime. A32487

Number of (undirected) Hamiltonian paths on the first n cells of the 3 X ceiling(n/3) knight graph. A389759