Properties of the Number 44388

Forty-Four Thousand Three Hundred Eighty-Eight

Basics

Value: 44387 → 44388 → 44389

Parity: even

Prime: No

Previous Prime: 44383

Next Prime: 44389

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ⁴ × 137

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010110101100100

Octal: 126544

Duodecimal: 21830

Hexadecimal: ad64

Square: 1970294544

Square Root: 210.68459839295326

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 collapsible integer compositions of n. A353860

Number of lines through at least 2 points of an n X n grid of points. A18808

Structured meta-prism numbers, the n-th number from a structured n-gonal prism number sequence. A100177

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (1, 0, 0), (1, 0, 1), (1, 1, 0)}. A151162

Expansion of ∑_n>=0 xⁿ / ∏_k=1..2·n (1 - k·x). A229286

Triangle of rooted planar maps. A46651

Triangle read by rows: T(n,k) is the number of nonseparable planar maps with r·n edges and a fixed outer face of r·k edges which are invariant under a rotation of 1/r for any r >= 2 (independent of actual value of r). A91599

Pisot sequence P(7,11), a(0)=7, a(1)=11, a(n+1) is the nearest integer to a(n)²/a(n-1). Agrees with A021014 only for n <= 20. A21013

S(n,n) + S(n-1,n-2) + S(n-2,n-4) + ... + S(n-k+1,n-2k+2), where k = [ (n+1)/2 ] and S(i,j) are Stirling numbers of second kind. A24428

a(n)=a(n-1)+a(n-2)-a(n-4)+a(n-5). A21014