Properties of the Number 87388

Eighty-Seven Thousand Three Hundred Eighty-Eight

Basics

Value: 87387 → 87388 → 87389

Parity: even

Prime: No

Previous Prime: 87383

Next Prime: 87403

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 7 × 3121

Divisors: 1, 2, 4, 7, 14, 28, 3121, 6242, 12484, 21847

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10101010101011100

Octal: 252534

Duodecimal: 426A4

Hexadecimal: 1555c

Square: 7636662544

Square Root: 295.61461398246195

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

Sum over each antidiagonal of A244306. A244307

Numerators of the second differences of the sequence of fractions (-1)ⁿ⁺¹*A176618(n)/A172031(n). A195240

First differences of A307632. A348773

Number of distinct solutions to reverse the 8 puzzle (3 X 3 analog of the 4 X 4 15 puzzle) in 28, 30, 32, ... moves. A46164

First differences of A154570. A156591

a(n) = (4ⁿ + 20)/3. A156605

a(n) = A348773(2·n). A348775

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (0, 1, -1), (0, 1, 0), (1, 0, 1)}. A150194

a(1) = 2; a(n+1) is the least prime formed by adding one or more digits to the digit reversal of a(n). A87388

Number of nX5 0..1 arrays with every element equal to 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A299725