Properties of the Number 12775

Twelve Thousand Seven Hundred Seventy-Five

Basics

Value: 12774 → 12775 → 12776

Parity: odd

Prime: No

Previous Prime: 12763

Next Prime: 12781

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 ² × 7 × 73

Divisors: 1, 5, 7, 25, 35, 73, 175, 365, 511, 1825

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11000111100111

Octal: 30747

Duodecimal: 7487

Hexadecimal: 31e7

Square: 163200625

Square Root: 113.02654555457315

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

Inverse Mobius transformation of A338164. A360428

Number of partitions p of n such that (number of numbers of the form 5k + 4 in p) is a part of p. A241553

Positions of squares in A276573. A277014

G.f. satisfies A(x) = 1/(1-x) + x²*(1-x)*A(x)⁴. A364594

Expansion of ∏_m>=1 1/(1 - m·q^m)⁵. A22729

a(n) = T(n, 2n-3), T given by A027023. A27027

Expansion of 1/(1-5x·c(6x)), where c(x) is the g.f. of A000108. A132865

Pseudoprimes to base 74. A20202

a(n) = greatest number in row n of array T given by A027023. A27039

7 times octagonal numbers: a(n) = 7·n*(3·n-2). A153797