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Properties of the Number -20706

Twenty Thousand Seven Hundred Six

Basics

Value: -20707 → -20706 → -20705

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 7 × 17 × 29

Divisors: 1, 2, 3, 6, 7, 14, 17, 21, 29, 34

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -101000011100010

Octal: -50342

Duodecimal: -BB96

Hexadecimal: -50e2

Square: 428738436

Square Root: 143.8957956300322

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

Coefficients of mock modular form H12 of type 2A, divided by 2. A256059
T(n,k)=1/36 the number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last. A184457
26-gonal numbers: a(n) = n*(12·n-11). A255185
Least positive integer m with prime(m)+2 and prime(prime(m))+2 both prime such that prime(m·n)+2 and prime(prime(m·n))+2 are both prime. A259487
Numbers that are the sum of seven fourth powers in six or more ways. A345572
Numbers that are the sum of seven fourth powers in seven or more ways. A345573
Numbers that are the sum of seven fourth powers in exactly seven ways. A345829
Numbers k such that ω(k) = 5 and the largest prime factor of k equals the sum of its remaining distinct prime factors, where ω(k) = A001221(k). A383729
Smallest triangular number which is a multiple (>1) of the n-th triangular number. A68084
Numbers n such that sum of distinct primes dividing n is divisible by the largest prime dividing n. Also n is neither a prime, nor a true power of prime and n is squarefree. Squarefree solutions of A071140. A71141