Properties of the Number 20413

Twenty Thousand Four Hundred Thirteen

Basics

Value: 20412 → 20413 → 20414

Parity: odd

Prime: No

Previous Prime: 20411

Next Prime: 20431

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 137 × 149

Divisors: 1, 137, 149, 20413

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 100111110111101

Octal: 47675

Duodecimal: B991

Hexadecimal: 4fbd

Square: 416690569

Square Root: 142.87407042567241

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

a(n) = prime(n)*prime(n+2). A90076

Numbers whose digits are a permutation of [0,...,n] and which contain the product of any two adjacent digits as a substring. A203569

a(n) = n³ + n² + 1. A98547

Sequence of pairwise relatively prime numbers of class P₄ (see comment in A275246). A275248

S₅ sequence in partition of integers > 1 described in A240521. A240522

Nonprime squarefree numbers whose prime indices all have the same ω (A001222) and the same sum of prime indices (A056239). A327908

Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly three bit positions. A261075

a(n) = a(n-1)+ a(round(2*(n-1)/3)) +a(round((n-1)/3)) starting a(1)=1. A33498

a(n) = ∑_{d divides n} (n/d)^3d. A73706

a(n) = 28·n² + 1. A158556