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Properties of the Number 16389

Sixteen Thousand Three Hundred Eighty-Nine

Basics

Value: 16388 → 16389 → 16390

Parity: odd

Prime: No

Previous Prime: 16381

Next Prime: 16411

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 3 × 607

Divisors: 1, 3, 9, 27, 607, 1821, 5463, 16389

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100000000000101

Octal: 40005

Duodecimal: 9599

Hexadecimal: 4005

Square: 268599321

Square Root: 128.0195297601112

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

Numbers that are the sum of 6 positive 7th powers. A3373
T(n,k)=Number of length n+4 0..k arrays with no consecutive five elements summing to more than 2·k. A241936
a(n) = 2n + 5. A168614
T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. A297314
a(n) = a(n-1) + a(m) for n >= 4, where m = 2·n - 2 - 2p+1 and p is the unique integer such that 2p < n - 1 <= 2p+1, starting with a(1) = a(2) = a(3) = 1. A50027
Smallest number > 1 equal to sum of n-th powers of its base-3 digits, or 0 if no such number exists (written in base 10). A33835
Base-3 perfect digital invariants (written in base 10): numbers equal to the sum of the k-th powers of their base-3 digits, for some k. A162216
Numbers a(n) are obtained by the direct application of sieve of Eratosthenes for A000695: retaining A000695(2)=4, we delete all multiples of 4, which are more than 4; retaining A000695(3)=5, we delete all multiples of 5, which are more than 5, etc. A152021
Lexicographically earliest sequence of distinct positive integers with no finite subset summing to a power of 2. A353889
Number of multisets summing to n that do not contain 1 and are not the first sums of any multiset. A390431