Properties of the Number -2770

Seven Hundred Seventy

Basics

Value: -2771 → -2770 → -2769

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 277

Divisors: 1, 2, 5, 10, 277, 554, 1385, 2770

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011010010

Octal: -5322

Duodecimal: -172A

Hexadecimal: -ad2

Square: 7672900

Square Root: 52.630789467763066

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

The infinite Seidel matrix H read by antidiagonals upwards; H = (H(n,k): n,k >= 0). A236935

Number of rooted identity trees with n nodes (rooted trees whose automorphism group is the identity group). A4111

Number of alternating permutations of order n. A1250

Number of positive subset sums of strict integer partitions of n. A284640

Triangle T(n,k) of numbers/2 of non-extendable (complete) non-self-adjacent simple paths within a square lattice bounded by rectangles with nodal dimensions n and k, n >= k >= 2. A213106

Numbers m such that the Bernoulli number B_m has denominator 66. A51230

Irregular triangle read by rows: T(n,k) is the number of binary pattern classes in the (8,n)-rectangular grid with k '1's and (8n-k) '0's: two patterns are in the same class if one of them can be obtained by a reflection or 180-degree rotation of the other. A228167

Triangle of Euler-Bernoulli or Entringer numbers read by rows: T(n,k) is the number of down-up permutations of n+1 starting with k+1. A8282

Number of representations of n as a sum of products of distinct pairs of positive integers, considered to be equivalent when terms or factors are reordered. A211856

a(n) = ∑_k=1..n k*σ(k). A143128