Properties of the Number 1827

One Thousand Eight Hundred Twenty-Seven

Basics

Value: 1826 → 1827 → 1828

Parity: odd

Prime: No

Previous Prime: 1823

Next Prime: 1831

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 29

Divisors: 1, 3, 7, 9, 21, 29, 63, 87, 203, 261

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11100100011

Octal: 3443

Duodecimal: 1083

Hexadecimal: 723

Square: 3337929

Square Root: 42.74342054632502

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: Yes

Taxicab Number: No

Super Prime: No

Friedman Number: Yes

Fermat Number: No

Cullen Number: No

OEIS Sequences

Generalized 10-gonal numbers: m*(4·m - 3) for m = 0, +- 1, +- 2, +- 3, ... A74377

Second 10-gonal (or decagonal) numbers: n*(4·n+3). A33954

Second differences of partition numbers A000041. A53445

Number of partitions of n containing a clique of size 1. A183558

The main column of a version of the square spiral. A156859

|First digit - second digit + third digit - fourth digit ...| = 12. A60980

a(n) = n*(2·n+5). A33537

Numbers k such that k | 5^k + 1. A15951

Values·corresponding to the records d in A179406. A179407

Powers of cube root of 5 rounded down. A17988