Properties of the Number -20436

Twenty Thousand Four Hundred Thirty-Six

Basics

Value: -20437 → -20436 → -20435

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 13 × 131

Divisors: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100111111010100

Octal: -47724

Duodecimal: -B9B0

Hexadecimal: -4fd4

Square: 417630096

Square Root: 142.95453822806746

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 (∏_j>=1 (1-(-x)^j) - 1)¹³ in powers of x. A47638

Sum of largest parts of all partitions of n into odd parts. A92322

Numbers n such that φ(n) = φ(n-1) - φ(n-2). A66231

Number n such that a2 - n³ is a triangular number (A000217), where a2 is the least square above n³. A233400

Normalized extreme values for "3x+1" trees of depth n. A45474

a(n) = 121·n² - n. A157960

a(n) = 169·n² - 13. A158550

Expansion of (1+x³*C³)*C², where C = (1-(1-4·x)^1/2)/(2·x) is g.f. for Catalan numbers, A000108. A71735

Sum of the prime factors of k equals half the sum of the prime factors of k + 1. A74213

Numbers n such that n¹⁶+1 and (n+2)¹⁶+1 are both prime. A217991