Properties of the Number 28379

Twenty-Eight Thousand Three Hundred Seventy-Nine

Basics

Value: 28378 → 28379 → 28380

Parity: odd

Prime: No

Previous Prime: 28351

Next Prime: 28387

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 13 × 37 × 59

Divisors: 1, 13, 37, 59, 481, 767, 2183, 28379

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111011011011

Octal: 67333

Duodecimal: 1450B

Hexadecimal: 6edb

Square: 805367641

Square Root: 168.4606779043703

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

T(n,k)=Number of length n+1 0..k arrays with the sum of the maximum of each adjacent pair multiplied by some arrangement of +-1 equal to zero. A250646

First run of n consecutive integers with same number of divisors ends at a(n). A19273

a(n) = A007290(n+2) - 1 = 2·C(n+2,3) - 1. A108766

Numerators of certain rationals approximating sqrt(3). A224445

Triangle T(n,k) in which the n-th row encodes the inverse of a 3n X 3n Jacobi matrix, with 1's on the lower, main, and upper diagonals in GF(2), where the encoding consists of the decimal representations for the binary rows (n >= 1, 1 <= k <= 3n). A363146

Non-semiprime composite numbers e such that there is no 0<a<b<c<d<e for which a! * b! * c! * d! * e! is a perfect square. A392333

Number of length n+1 0..6 arrays with the sum of the maximum of each adjacent pair multiplied by some arrangement of +-1 equal to zero. A250644

Number of length 5+1 0..n arrays with the sum of the maximum of each adjacent pair multiplied by some arrangement of +-1 equal to zero. A250649

Number of n X n binary matrices, symmetric about both diagonal and antidiagonal, with no more than 2 ones in any 2 X 2 subblock. A141505

Triangle read by rows: the n-th row gives the least sequence of n consecutive numbers with the same number of divisors. A376557