Properties of the Number 15994

Fifteen Thousand Nine Hundred Ninety-Four

Basics

Value: 15993 → 15994 → 15995

Parity: even

Prime: No

Previous Prime: 15991

Next Prime: 16001

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 11 × 727

Divisors: 1, 2, 11, 22, 727, 1454, 7997, 15994

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11111001111010

Octal: 37172

Duodecimal: 930A

Hexadecimal: 3e7a

Square: 255808036

Square Root: 126.46738710039043

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

Sum of smallest parts (counted with multiplicity) of all compositions of n. A97940

G.f. A(x) satisfies xA(x)⁵ = B(xA(x⁵)) where B(x) = x/(1-5x). A91200

G.f.: 1 / ∏_i>=1 (1-q^2·i-1)²*(1-q^12·i-8)*(1-q^12·i-6)*(1-q^12·i-4)*(1-q^12·i). A201077

a(n) = 2662·n + 22. A157613

Expansion of ( ∑_{n = -infinity..infinity} x^n² )^-11. A4412

Triangle read by rows, T(n,k) = !n + (k-1)*(n-1)!, with n>=1, 1<=k<=n; Position of the first n-letter permutation beginning with number k in the list of lexicographically sorted permutations A030299. A237450

Number of integers in base n having exactly four distinct digits such that the number formed by the consecutive subsequence of the initial j digits is divisible by j for all j in {1,2,3,4}. A333469

a(n)=φ(n²+1)/n if (n²+1) is composite and φ(n²+1)==0 (mod n). A67926

Numbers n for which there are exactly five k such that n = k + reverse(k). A72429

Half-sum (or average) of cubes of two distinct odd primes. A138855