Properties of the Number 12015

Twelve Thousand Fifteen

Basics

Value: 12014 → 12015 → 12016

Parity: odd

Prime: No

Previous Prime: 12011

Next Prime: 12037

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 89

Divisors: 1, 3, 5, 9, 15, 27, 45, 89, 135, 267

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10111011101111

Octal: 27357

Duodecimal: 6B53

Hexadecimal: 2eef

Square: 144360225

Square Root: 109.61295543867067

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

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically. A207717

Triangle read by rows, 3^k*S₃(n, k) where S_m(n, k) are the Stirling-Frobenius subset numbers of order m; n >= 0, k >= 0. A225466

Decimal value of the bitmap of active segments in 7-segment display of the number n, variant 1: bits 0-6 refer to segments from top to bottom, left to right. A234691

Number of integer compositions of n whose parts have weakly decreasing numbers of prime factors (with multiplicity). A358335

Numbers k such that k·k! + 1 is prime. A90703

a(n) = 192·2ⁿ - 273 (n>=1). A304516

9 times pentagonal numbers: 9·n*(3·n-1)/2. A152996

E.g.f.: ∑_n>=0 ( -log(1 - n·x)/n )ⁿ / n!. A232549

a(n) = A080069(n) OR A267357(n). A328111

Number of integer partitions of n that are either constant or relatively prime. A338553