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Properties of the Number 3816

Three Thousand Eight Hundred Sixteen

Basics

Value: 3815 → 3816 → 3817

Parity: even

Prime: No

Previous Prime: 3803

Next Prime: 3821

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 3 × 3 2 × 53

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 111011101000

Octal: 7350

Duodecimal: 2260

Hexadecimal: ee8

Square: 14561856

Square Root: 61.773780845922005

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

Octagonal numbers: n*(3·n-2). Also called star numbers. A567
Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of the Fibonacci self-fusion matrix (A202453). A202605
Numbers k such that 3k - 28 is prime. A219047
Numbers n such that the decimal expansions of both n and n2 have 1 as smallest digit and 8 as largest digit. A257211
Even octagonal numbers: a(n) = 4·n*(3·n-1). A14642
G.f. satisfies: A(x) = 1 + x·A(x)3 + x2*A(x)4. A186997
a(n) = Frobenius number for 4 successive primes = F[p(n), p(n+1), p(n+2), p(n+3)]. A138990
Number of ways of writing n as a sum of 9 nonnegative cubes. A173682
Numbers k such that σ(x) = k has exactly 5 solutions. A60661
Number of partitions of n having no parts with multiplicity 3. A118807