Properties of the Number 27905

Twenty-Seven Thousand Nine Hundred Five

Basics

Value: 27904 → 27905 → 27906

Parity: odd

Prime: No

Previous Prime: 27901

Next Prime: 27917

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 5581

Divisors: 1, 5, 5581, 27905

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110100000001

Octal: 66401

Duodecimal: 14195

Hexadecimal: 6d01

Square: 778689025

Square Root: 167.0478973228936

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 nXk nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value increasing by 0 or 1 with every step right, diagonally se or down. A252983

Where records appear in A109734. A109740

Number of nX7 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value increasing by 0 or 1 with every step right, diagonally se or down. A252982

From a nim-like game. A3412

Complete list of solutions to y² = x³ + 1025; sequence gives y values. A134166

Smallest k such that 37^k mod k = n. A178198

Number of n X 4 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value increasing by 0 or 1 with every step right, diagonally se or down. A252979

Number of partitions of n with equal nonzero number of parts congruent to each of 0 and 2 (mod 4). A35547

a(n) = ∑_{k = 0..n} (-1)^k*prime(k)#, where prime(k)# is the prime factorial function. A265184

T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a subsequence of length 1, 2, 3 or 4 with sum zero. A193710