Properties of the Number 852

Eight Hundred Fifty-Two

Basics

Value: 851 → 852 → 853

Parity: even

Prime: No

Previous Prime: 839

Next Prime: 853

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 71

Divisors: 1, 2, 3, 4, 6, 12, 71, 142, 213, 284

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1101010100

Octal: 1524

Duodecimal: 5B0

Hexadecimal: 354

Square: 725904

Square Root: 29.189039038652847

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

Pentagonal numbers: a(n) = n*(3·n-1)/2. A326

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

Generalized pentagonal numbers: m*(3·m - 1)/2, m = 0, +-1, +-2, +-3, .... A1318

Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity). A6753

Coordination sequence for hexagonal close-packing. A7899

Coordination sequence for "reo" 3D uniform tiling. A299279

Numbers whose prime indices cannot be partitioned into constant blocks with distinct sums. A381636

Numbers n such that BCR(n) = n, where BCR = binary-complement-and-reverse = take one's complement then reverse bit order. A35928

Q-toothpick sequence (see Comments for precise definition). A187210

Dispersion of A042948 (numbers >3, congruent to 0 or 1 mod 4), by antidiagonals. A191663