Properties of the Number 856

Eight Hundred Fifty-Six

Basics

Value: 855 → 856 → 857

Parity: even

Prime: No

Previous Prime: 853

Next Prime: 857

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 107

Divisors: 1, 2, 4, 8, 107, 214, 428, 856

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101011000

Octal: 1530

Duodecimal: 5B4

Hexadecimal: 358

Square: 732736

Square Root: 29.257477676655586

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

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

Centered pentagonal numbers: (5n²+5n+2)/2; crystal ball sequence for 3.3.3.4.4. planar net. A5891

9-gonal (or enneagonal or nonagonal) numbers: a(n) = n*(7·n-5)/2. A1106

a(n) = 4·n² - 3·n + 1. A54552

Generalized 9-gonal (or enneagonal) numbers: m*(7·m - 5)/2 with m = 0, 1, -1, 2, -2, 3, -3, ... A118277

Product of the cube of a prime (A030078) and a different prime. A65036

Dispersion of (floor(n·e)), by antidiagonals. A191455

Number of log-concave compositions (ordered partitions) of n. A69916

Multiples of 8 containing an 8 in their decimal representation. A121028

Numbers whose sum of digits is 19. A166459