Properties of the Number -145888

One Hundred Forty-Five Thousand Eight Hundred Eighty-Eight

Basics

Value: -145889 → -145888 → -145887

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 ⁵ × 47 × 97

Divisors: 1, 2, 4, 8, 16, 32, 47, 94, 97, 188

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -100011100111100000

Octal: -434740

Duodecimal: -70514

Hexadecimal: -239e0

Square: 21283308544

Square Root: 381.9528766745971

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

Composite numbers k such that k - φ(k) divides σ(k) - k. A68418

Numbers k such that σ(k) = 3k - 2*φ(k). A68414

Number of n X 2 0..1 arrays with every element both equal and not equal to some elements at offset (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero. A278171

Composite n such that n reduced mod(φ(n)) = σ(n) reduced mod(n). A68495