Properties of the Number 16640

Sixteen Thousand Six Hundred Forty

Basics

Value: 16639 → 16640 → 16641

Parity: even

Prime: No

Previous Prime: 16633

Next Prime: 16649

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ⁸ × 5 × 13

Divisors: 1, 2, 4, 5, 8, 10, 13, 16, 20, 26

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000100000000

Octal: 40400

Duodecimal: 9768

Hexadecimal: 4100

Square: 276889600

Square Root: 128.9961239727768

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

Number of enriched p-trees of weight n. A289501

a(n) = n*(n+3)*2^n-3. A1793

Numbers that are divisible by exactly 10 primes with multiplicity. A46314

Numbers that are the sum of 3 positive 7th powers. A3370

Heinz numbers of integer partitions whose product of parts is one greater than their sum. A325041

Triangle of coefficients of Chebyshev polynomials T_n(x). A8310

Coefficients of Chebyshev polynomials of the first kind: triangle of coefficients in expansion of cos(n·x) in descending powers of cos(x). A28297

Number of maximal Golomb rulers of length n. A325683

Norm of the sum of divisors function σ(n) generalized for Gaussian integers. A103230

a(n) = sinh(2·arcsinh(n))² = 4·n²*(n² + 1). A173116