Properties of the Number 20176

Twenty Thousand One Hundred Seventy-Six

Basics

Value: 20175 → 20176 → 20177

Parity: even

Prime: No

Previous Prime: 20173

Next Prime: 20177

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 13 × 97

Divisors: 1, 2, 4, 8, 13, 16, 26, 52, 97, 104

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111011010000

Octal: 47320

Duodecimal: B814

Hexadecimal: 4ed0

Square: 407070976

Square Root: 142.04224723651762

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

Numbers k such that 7^k - 2 is a prime. A90669

Number of permutations of length n which avoid the patterns 123 and 4312. A116699

Recurrence a(n) = a(n-2) + n^M for M=5, starting with a(0)=0, a(1)=1. A231304

Determinants of 4 X 4 matrices of 16 consecutive primes. A118799

Triangle read by rows: T(n,k) is the number of weighted lattice paths B(n) having a total of k uhd and uHd strings. A247294

a(n) = n²*(16·n⁴-20·n²+7)/3. A2594

Number of weighted lattice paths B(n) having no uhd and no uHd strings. A247295

a(0) = a(1) = 1; for n >= 2, a(n) = a(n-1) + a(n-2) - (n-1) if that number is positive and not already in the sequence, otherwise a(n) = a(n-1) + a(n-2) + (n-1). A117822

a(n) = 1ⁿ + 3ⁿ + 5ⁿ + 7ⁿ. A134006

Monotonic ordering of set S generated by these rules: if·and y are in S then x²+y²-xy is in S, and 2 is in S. A192533