Properties of the Number -1258

Two Hundred Fifty-Eight

Basics

Value: -1259 → -1258 → -1257

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 17 × 37

Divisors: 1, 2, 17, 34, 37, 74, 629, 1258

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011101010

Octal: -2352

Duodecimal: -88A

Hexadecimal: -4ea

Square: 1582564

Square Root: 35.4682957019364

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

Expansion of ∏_k>=1 (1 - x^φ(k)), where φ is Euler's totient function. A305353

Expansion of 1 / (1 + ∑_i>=1 ∑_j=1..i x^i·j). A327799

a(n) = n*(n+3). A28552

Number of integer partitions of n in which no two distinct parts are relatively prime. A328673

Number of partitions of n such that there is exactly one part which occurs twice, while all other parts occur only once. A90858

Expansion of 1/(1 - x - x⁹ - x¹⁷ + x¹⁸). A175772

Heinz numbers of integer partitions for which the number of even conjugate parts is equal to the number of odd conjugate parts. A350848

Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X 7 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=2, 0<=k<=3·floor(n/2), read by rows. A238555

Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X 8 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=2, 0<=k<=4·floor(n/2), read by rows. A238557

Iterate the map in A006369 starting at 8. A28394