Properties of the Number 27864

Twenty-Seven Thousand Eight Hundred Sixty-Four

Basics

Value: 27863 → 27864 → 27865

Parity: even

Prime: No

Previous Prime: 27851

Next Prime: 27883

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ⁴ × 43

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110011011000

Octal: 66330

Duodecimal: 14160

Hexadecimal: 6cd8

Square: 776402496

Square Root: 166.92513291892266

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 that have exactly eight prime factors counted with multiplicity (A046310) whose digit reversal is different and also has 8 prime factors (with multiplicity). A109028

Sum of n-th antidiagonal of array in A081998. A82001

Area A of the cyclic quadrilaterals PQRS with PQ>=QR>=RS>=SP, such that A, the sides, the radius of the circumcircle and the two diagonals are integers. A219225

a(n) = σ((4ⁿ - 1)/3), where σ(n) is the sum of positive divisors of n. A102359

Numbers n for which number of iterations to reach the largest equals number of iterations to reach 1 from the largest in Collatz (3x+1) trajectory of n. A224303

a(n) = number of primes less than the square root of the (2ⁿ)-th prime. A249058

Triangle read by rows: T(n,k) is the number of n X n binary matrices with k=0..n² ones forming a polyomino, under action of dihedral group of the square D₄. A331462

Fourier coefficients of the modular form (1/t_3A²) * F_3A¹². A341558

Indices of 0 in A348295: numbers m such that ∑_k=1..m (-1)^{floor(k*(sqrt(2}-1))) = ∑_k=1..m (-1)^A097508(k) = 0. A348299

Sum of the divisors of A001045(n) (Jacobsthal numbers). A366772