Properties of the Number 16564

Sixteen Thousand Five Hundred Sixty-Four

Basics

Value: 16563 → 16564 → 16565

Parity: even

Prime: No

Previous Prime: 16561

Next Prime: 16567

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 41 × 101

Divisors: 1, 2, 4, 41, 82, 101, 164, 202, 404, 4141

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100000010110100

Octal: 40264

Duodecimal: 9704

Hexadecimal: 40b4

Square: 274366096

Square Root: 128.70120434556935

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

Expansion of ∏_m>=1 (1+x^m)^A000009(m). A50342

Number of pentagonal regions in regular n-gon with all diagonals drawn. A67152

Difference of two positive 5th powers. A181124

Triangle read by rows, T(n, k) = 4^k*S₄(n, k) where S_m(n, k) are the Stirling-Frobenius subset numbers of order m; n >= 0, k >= 0. A225467

Numbers that are the sum of nine fourth powers in exactly ten ways. A345852

Smallest number that requires n iterations of the bi-unitary totient function (A116550) to reach 1. A5424

Triangle read by rows, k!*S₄(n, k) where S_m(n, k) are the Stirling-Frobenius subset numbers of order m; n >= 0, k >= 0. A225473

a(n) = 7ⁿ - 3ⁿ. A190541

4 times heptagonal numbers: a(n) = 2·n*(5·n-3). A153784

Monotonic ordering of nonnegative differences 7ⁱ-3^j, for 40>= i>=0, j>=0. A192154