Properties of the Number 850

Eight Hundred Fifty

Basics

Value: 849 → 850 → 851

Parity: even

Prime: No

Previous Prime: 839

Next Prime: 853

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 ² × 17

Divisors: 1, 2, 5, 10, 17, 25, 34, 50, 85, 170

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1101010010

Octal: 1522

Duodecimal: 5AA

Hexadecimal: 352

Square: 722500

Square Root: 29.154759474226502

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) = sigma₂(n): sum of squares of divisors of n. A1157

List of totally balanced sequences of 2n binary digits written in base 10. Binary expansion of each term contains n 0's and n 1's and reading from left to right (the most significant to the least significant bit), the number of 0's never exceeds the number of 1's. A14486

Number of Look-and-Say partitions of n; see Comments. A239455

Pentagonal numbers multiplied by 2: a(n) = n*(3·n-1). A49450

Number of partitions of n with distinct parts p(i) such that if i ≠ j, then |p(i) - p(j)| >= 3. A25157

Numbers k such that 2^k - 3 is prime. A50414

Sum of composite numbers between successive primes. A54265

Numbers m such that the Bernoulli number B_m has denominator 66. A51230

Numbers n such that n³² + 1 is prime. A6315

Number of distinct products ij with 1 <= i, j <= n (number of distinct terms in n X n multiplication table). A27424