Properties of the Number -156672

One Hundred Fifty-Six Thousand Six Hundred Seventy-Two

Basics

Value: -156673 → -156672 → -156671

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ¹⁰ × 3 ² × 17

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 16, 17

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100110010000000000

Octal: -462000

Duodecimal: -76800

Hexadecimal: -26400

Square: 24546115584

Square Root: 395.8181400592954

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

T(n,k) = Number of n-turn rook's tours on a k X k board summed over all starting positions. A187189

a(n) = ∑_{0 < x,y,z,t <= n and gcd(x² + y² + z² + t², n)=1} gcd(x² + y² + z² + t² - 1, n). A239613

Coefficient triangle of polynomials (rising powers) related to convolutions of A002605(n), n>=0, (generalized (2,2)-Fibonacci). Companion triangle is A073405. A73406

a(n) = ∑_k=1..n σ(k)*σ(2·k), where σ(n) = A000203(n) is the sum of the divisors of n. A347108

Coefficient triangle of polynomials (falling powers) related to convolutions of A002605(n), n>=0, (generalized (2,2)-Fibonacci). Companion triangle is A073403. A73404

a(n) = smallest k such that τ(k)= n*τ(k-1) where τ(k) = number of divisors of k, or 0 if no such number exists. A86551

Solutions y to the negative Pell equation y² = 72·x² - 73728 with x,y >= 0. A281238

(1/8) times the sum of the elements of all subsets of [n] whose sum is divisible by eight. A309300

Number of 7-turn rook's tours on an n X n board summed over all starting positions. A187194