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Properties of the Number 28387

Twenty-Eight Thousand Three Hundred Eighty-Seven

Basics

Value: 28386 → 28387 → 28388

Parity: odd

Prime: Yes

Previous Prime: 28351

Next Prime: 28393

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 28387

Divisors: 1, 28387

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111011100011

Octal: 67343

Duodecimal: 14517

Hexadecimal: 6ee3

Square: 805821769

Square Root: 168.48442064475873

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

Powers of cube root of 3 rounded down. A17982
Powers of cube root of 9 rounded down. A18000
Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 478", based on the 5-celled von Neumann neighborhood. A282485
Primes with multiplicative persistence value 6. A46506
Primes of the form k2 - 7·k + 7. A89376
Number of parts of even multiplicities in all the partitions of n. A264400
Prime chain of 128 terms, including 104 distinct primes, consisting of the output of eight equations that alternate sequentially within a procedural expression of a single polynomial. The equations are either subsequences of x2 - 79x + 1601 or transforms with one exception: 100x2 - 2260x + 12959. The other four distinct equations are Euler-derived: 25x2 - 1185x + 14083, 25x2 - 775x + 6047, 100x2 - 2280x + 13159, 100x2 - 4160x + 43427. A140708
Sequence of primes separated by [sequence of prime] elements. 2, [find 2nd prime after 2 = ] 5, [find 3rd prime after 5 =] 13, [find 5th prime after 13 =] 61, ..., etc. A180302
Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths ending at each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 8, n >= 2. A214375
Number of -1..1 arrays of n elements with first and second differences also in -1..1. A201081