Properties of the Number -630784

Six Hundred Thirty Thousand Seven Hundred Eighty-Four

Basics

Value: -630785 → -630784 → -630783

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ¹³ × 7 × 11

Divisors: 1, 2, 4, 7, 8, 11, 14, 16, 22, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

375 Try Today's Challenge

Representations

Binary: -10011010000000000000

Octal: -2320000

Duodecimal: -265054

Hexadecimal: -9a000

Square: 397888454656

Square Root: 794.2191133434148

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

a(n) = n*(n-3)*2^n-2. A178987

Numbers k with canonical prime factorization k = p1^e1*p2^e2*p3^e3 such that the points (p1, e1), (p2, e2) and (p3, e3) form a nondegenerate integer-sided triangle. A387586

Numbers n such that sum of the squares of the prime factors of n equals the sum of the squares of the digits of n. A67184

Define the array k(n,x) = number of m such that τ(gcd(n,m)) is·where m runs from 1 to n. Also define h(n,x) = ∑_{d∣n : τ(d) = x} d. The sequence contains numbers n such that k(n,x)*x = h(n,x) has at least one solution x. A197099