Properties of the Number 27404

Twenty-Seven Thousand Four Hundred Four

Basics

Value: 27403 → 27404 → 27405

Parity: even

Prime: No

Previous Prime: 27397

Next Prime: 27407

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 13 × 17 × 31

Divisors: 1, 2, 4, 13, 17, 26, 31, 34, 52, 62

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101100001100

Octal: 65414

Duodecimal: 13A38

Hexadecimal: 6b0c

Square: 750979216

Square Root: 165.54153557340223

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

Numbers k such that both k and k+1 are abundant. A96399

Numbers k such that k and k+1 have the same sum of unitary divisors (A034448). A64125

Number of immersions of an unoriented circle into the oriented sphere with n double points. A8987

a(n) = binomial(n+5,4) - 1. A63258

Numbers k such that lcm(1,2,3,...,k)/13 equals the denominator of the k-th harmonic number H(k). A112818

T(n,k) = count of degree k monomials in the elementary symmetric polynomials e(μ,k) summed over all partitions μ of n. A209669

Triangle read by rows: T(n,g) = number of general immersions of a circle with n crossings in a surface of arbitrary genus g (the circle is not oriented, the surface is oriented). A260848

Expansion of (3 + x²) / (1 - x)⁴. A37237

Numbers k such that both σ(k) >= 2·k-1 and σ(k+1) >= 2*(k+1)-1. A103289

Numbers k such that both k and k+1 are Zumkeller numbers (A083207). A328327