Properties of the Number 1830

One Thousand Eight Hundred Thirty

Basics

Value: 1829 → 1830 → 1831

Parity: even

Prime: No

Previous Prime: 1823

Next Prime: 1831

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 61

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 61, 122

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 11100100110

Octal: 3446

Duodecimal: 1086

Hexadecimal: 726

Square: 3348900

Square Root: 42.77849927241488

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

Second hexagonal numbers: a(n) = n*(2·n + 1). A14105

Products of exactly four distinct primes. A46386

Fibonacci sequence beginning 0, 3. A22086

a(n) = p*(p-1)/2 for p = prime(n). A8837

a(n) = 2·n*(4·n + 1). A33585

Least k such that ∑_i=1..k (prime(i) + prime(i+2) - 2·prime(i+1)) = 2n + 1. A73051

Staggered diagonal of triangular spiral in A051682. A81266

Numbers m such that there are precisely 18 groups of order m. A298909

Number of rectangular plane partitions of n. A323429

Number of ternary squarefree words of length n. A6156