Properties of the Number -2870

Eight Hundred Seventy

Basics

Value: -2871 → -2870 → -2869

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 7 × 41

Divisors: 1, 2, 5, 7, 10, 14, 35, 41, 70, 82

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101100110110

Octal: -5466

Duodecimal: -17B2

Hexadecimal: -b36

Square: 8236900

Square Root: 53.5723809439155

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

Consider the triangle in which the n-th row starts with n, contains n terms and the difference of successive terms is 1,2,3,... up to n-1. Sequence gives row sums. A81498

McKay-Thompson series of class 10c for Monster. A58204

Numerator of Bernoulli(n, 4/11). A159246

Square pyramidal numbers: a(n) = 0² + 1² + 2² + ... + n² = n*(n+1)*(2·n+1)/6. A330

Functional determinants; partitions of partitions; Euler transform applied twice to all 1's sequence. A1970

a(n) = binomial(n+3, 3)/4 for odd n, n*(n+2)*(n+4)/24 for even n. A6918

Number of compositions (ordered partitions) of n into squares. A6456

a(0)=0, a(1)=2 then a(n) = a(n-2) + 2·sqrt(8·a(n-1)² + 8·a(n-1) + 1). A53141

Generalized 17-gonal (or heptadecagonal) numbers: m*(15·m - 13)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303305

Molien series of 4-dimensional representation of cyclic group of order 4 over GF(2) (not Cohen-Macaulay). A8610