Properties of the Number 4278

Four Thousand Two Hundred Seventy-Eight

Basics

Value: 4277 → 4278 → 4279

Parity: even

Prime: No

Previous Prime: 4273

Next Prime: 4283

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 23 × 31

Divisors: 1, 2, 3, 6, 23, 31, 46, 62, 69, 93

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000010110110

Octal: 10266

Duodecimal: 2586

Hexadecimal: 10b6

Square: 18301284

Square Root: 65.40642170307133

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

3 times pentagonal numbers: 3·n*(3·n-1)/2. A62741

a(n) = 2·n*(4·n + 1). A33585

Powers of cube root of 23 rounded to nearest integer. A18043

Powers of cube root of 23 rounded down. A18042

Trajectory of n under the Reverse and Add! operation carried out in base 4 (presumably) does not reach a palindrome and (presumably) does not join the trajectory of any term m < n. A75421

Even triangular numbers. A14494

Coefficients in the expansion ∏_n>=1 (1-q^2n-1)²/(1-q²ⁿ)². A274621

Squarefree triangular numbers. A61304

T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 nXk array. A219773