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Properties of the Number -38801

Thirty-Eight Thousand Eight Hundred One

Basics

Value: -38802 → -38801 → -38800

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 × 23 × 241

Divisors: 1, 7, 23, 161, 241, 1687, 5543, 38801

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1001011110010001

Octal: -113621

Duodecimal: -1A555

Hexadecimal: -9791

Square: 1505517601

Square Root: 196.9796943849797

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

Partial sums of A151782. A151793
Relative of Hofstadter Q-sequence: a(n) = max(0, n+19395) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 0. A283886
Number of different fixed (possibly) disconnected tetrominoes bounded tightly by an n X n square. A163434
Odd composite integers m such that U(m)2 == 1 (mod m) and V(m) == 4 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=4 and b=-1, respectively. A337627
Odd composite integers m such that A000032(3·m-J(m,5)) == 3·J(m,5) (mod m), where J(m,5) is the Jacobi symbol. A339724
Odd composite integers m such that A000045(3·m-J(m,5)) == 1 (mod m), where J(m,5) is the Jacobi symbol. A340235
Pentagonal numbers (A000326) whose digit reversal is a prime. A115707
Number of connected induced subgraphs in the n-Apollonian network. A298123
Odd composite integers m such that U(m)2 == 1 (mod m) and V(m) == 7 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=7 and b=-1, respectively. A337630
Pentagonal numbers which are products of three distinct primes. A381650