Properties of the Number 86873

Eighty-Six Thousand Eight Hundred Seventy-Three

Basics

Value: 86872 → 86873 → 86874

Parity: odd

Prime: No

Previous Prime: 86869

Next Prime: 86923

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 109 × 797

Divisors: 1, 109, 797, 86873

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10101001101011001

Octal: 251531

Duodecimal: 42335

Hexadecimal: 15359

Square: 7546918129

Square Root: 294.7422602885443

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 d(k) < d(k+1) < d(k+2) < d(k+3) < d(k+4), where d(n) is the number of divisors of n. A364717

Triangle read by rows in which row n >= 1 gives coefficients in expansion of the polynomial ∑_k=1..n (1/n)*binomial(n,k)*binomial(n,k-1)*x^2k*(1+x)^2n-2k / x² in powers of x. A86873

Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and the central column and the two maximums of the diagonal and antidiagonal nondecreasing horizontally and vertically. A254355

Number of (2+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and the central column and the two maximums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A254587

Number of nX7 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0, 1 or 2 neighboring 1s. A297373

a(n) = a(n-1) + 6·a(n-3) + 2·a(n-4), with a(0) = a(1) = 1, a(2) = 3, a(3) = 6. A339600