Properties of the Number 87380

Eighty-Seven Thousand Three Hundred Eighty

Basics

Value: 87379 → 87380 → 87381

Parity: even

Prime: No

Previous Prime: 87359

Next Prime: 87383

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 5 × 17 × 257

Divisors: 1, 2, 4, 5, 10, 17, 20, 34, 68, 85

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010101010100

Octal: 252524

Duodecimal: 42698

Hexadecimal: 15554

Square: 7635264400

Square Root: 295.6010825419961

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-x+2·x²)/((1+x)*(1-2·x)). A97073

a(n) = a(n-1) + 2·a(n-2) + 2, for n>=3, where a(0)= 1, a(1)= 2, a(2)= 4. A26644

a(n) = -a(n-1) + 2·a(n-2), a(0)=1, a(1)=2. A84247

Triangle read by rows, coefficients of the polynomials P(m, n) = ∑_k=1..n binomial(m·n, m·k)* P(m, n-k)*z with P(m, 0) = 1 and m = 3. A278073

a(n) = (4/3)*(4ⁿ - 1). A80674

Totient of 2ⁿ+1. A53285

Number of 4-ary Lyndon words of length n over Z₄ with trace 1 and subtrace 0. A74406

Number of 4-ary Lyndon words of length n over Z₄ with trace 1 and subtrace 1. A74407

Number of 4-ary Lyndon words of length n over Z₄ with trace 1 and subtrace 2. A74408

Number of 4-ary Lyndon words of length n over Z₄ with trace 1 and subtrace 3. A74409