Properties of the Number -18970

Eighteen Thousand Nine Hundred Seventy

Basics

Value: -18971 → -18970 → -18969

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 7 × 271

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 271, 542

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100101000011010

Octal: -45032

Duodecimal: -AB8A

Hexadecimal: -4a1a

Square: 359860900

Square Root: 137.73162309360913

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

Weird numbers: abundant (A005101) but not pseudoperfect (A005835). A6037

Unitary weird numbers: unitary abundant (A034683) but not unitary pseudoperfect (A293188). A64114

Bi-unitary weird numbers: bi-unitary abundant numbers (A292982) that are not bi-unitary pseudoperfect (A292985). A292986

Infinitary weird numbers: infinitary abundant numbers (A129656) that are not infinitary pseudoperfect numbers (A306983). A306984

Möbius transform of A341512, σ(n)*A003961(n) - n*σ(A003961(n)). A346239

Euler transform of A373216. A373297

Number of primitive (period n) periodic palindromic structures using exactly three different symbols. A56519

Numbers in ascending order formed by using all the digits of the next n numbers. A81991

Sequence lists numbers k > 1 such that k⁴ == d(k) (mod σ(k)), where d = A000005 and σ = A000203. A323251

Total sum of composite parts in all partitions of n. A326982