Properties of the Number 89640

Eighty-Nine Thousand Six Hundred Forty

Basics

Value: 89639 → 89640 → 89641

Parity: even

Prime: No

Previous Prime: 89633

Next Prime: 89653

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ³ × 5 × 83

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111000101000

Octal: 257050

Duodecimal: 43A60

Hexadecimal: 15e28

Square: 8035329600

Square Root: 299.3993987969916

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

Smallest number k such that prime(n) is the n-th divisor of k. A221647

T(n,k) = Number of n X k 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 2,1,0,3,4 for x=0,1,2,3,4. A196436

T(n,k) = Number of n X k 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 4,1,3,2,0 for x=0,1,2,3,4. A197199

Number of acute triangles, distinct up to congruence, on an n X n grid (or geoboard). A190021

Triangle read by rows. Number T(n, k) of partitions of the multiset [1, 1, 1, 2, 2, 2, ..., n, n, n] into k nonempty submultisets, for 1 <= k <= 3n. A358721

Number of nX4 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 2,1,0,3,4 for x=0,1,2,3,4. A196432

Numbers k such that (86·10^k - 311)/9 is prime. A293911

Enumeration of partial sums of 1 + [1,2] + [2,3] + [1,2] + [2,3] + ... A89640