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Properties of the Number 27950

Twenty-Seven Thousand Nine Hundred Fifty

Basics

Value: 27949 → 27950 → 27951

Parity: even

Prime: No

Previous Prime: 27947

Next Prime: 27953

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 2 × 13 × 43

Divisors: 1, 2, 5, 10, 13, 25, 26, 43, 50, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110100101110

Octal: 66456

Duodecimal: 14212

Hexadecimal: 6d2e

Square: 781202500

Square Root: 167.1825349730049

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

Number of tilings of a 5 X n rectangle with n pentominoes of any shape. A174249
Number A(n,k) of tilings of a k X n rectangle using pentominoes of any shape; square array A(n,k), n>=0, k>=0, read by antidiagonals. A233427
Triangle T(n,k) (n >= k >= 0) read by rows: T(n,0) = (1+(-1)n)/2; for k>=1, set T(0,k) = 0, S(n,k) = binomial(n,k)*binomial(n+k+1,k), and for n>=1, T(n,k) = S(n,k)-T(n-1,k). A331432
T(n,m) = Number of ways to partition an nXm grid into 6 connected equal-area regions. A167262
Fifth column of (1,5)-Pascal triangle A096940. A96942
Convolution of primes with odd primes. A209403
Consider the graph with one central vertex connected to three outer vertices (a star graph). Then, a(n) is the minimum number of moves required to transfer a stack of n pegs from one outer vertex to another outer vertex, moving pegs to adjacent vertices, following the rules of the Towers of Hanoi. A291876
a(n) is the smallest number which can be represented as the sum of n distinct nonzero squares in exactly 2 ways, or -1 if no such number exists. A374287
a(n) = (n/2)*(n + 1)*(3·n + 11). A59997
Numbers k such that the largest prime factor of k is equal to the sum of primes dividing k+1 (with repetition). A71861