Properties of the Number -145690

One Hundred Forty-Five Thousand Six Hundred Ninety

Basics

Value: -145691 → -145690 → -145689

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 17 × 857

Divisors: 1, 2, 5, 10, 17, 34, 85, 170, 857, 1714

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -100011100100011010

Octal: -434432

Duodecimal: -7038A

Hexadecimal: -2391a

Square: 21225576100

Square Root: 381.69359439215117

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

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1)*b(n-2), where a(0) = 1, a(1) = 3, a[2] = 5, b(0) = 2, b(1) = 4, and (a(n)) and (b(n)) are increasing complementary sequences. A295364

Starting positions of strings of four 1's in the decimal expansion of π. A83602

a(n) = ceiling((sqrt n)^{sqrt n}). A94093