Properties of the Number -2427

Four Hundred Twenty-Seven

Basics

Value: -2428 → -2427 → -2426

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 809

Divisors: 1, 3, 809, 2427

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100101111011

Octal: -4573

Duodecimal: -14A3

Hexadecimal: -97b

Square: 5890329

Square Root: 49.26459174701441

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

Expansion of 1/(1-x²(1-3x)). A106855

Sum of the first n primes. A7504

a(n) = ∑_k<=n A000203(k)*(n-k+1), where A000203(m) is the sum of divisors of m. A175254

Sum of the first n² primes. A109724

T(n,k)=Number of lower triangles of an (n+2k-2)X(n+2k-2) 0..k array with new values introduced in row major order 0..k and no element unequal to more than one horizontal or vertical neighbor. A194778

Expansion of 1 / ((1-x)²*(1-x²)*(1-x³)*(1-x⁴)). A2621

Numbers k such that k equals the sum of its digits raised to the consecutive powers (1,2,3,...). A32799

a(n) = a(n-1) + a(m) for n >= 4, where m = 2^p+1 + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1, a(2) = 2, and a(3) = 1. A50041

Positive numbers that are not the sum of a triangular number, a nonnegative cube and a positive Fibonacci number. A115177

Numbers k such that φ(k+1) = φ(k-1). A66812