Properties of the Number 28650

Twenty-Eight Thousand Six Hundred Fifty

Basics

Value: 28649 → 28650 → 28651

Parity: even

Prime: No

Previous Prime: 28649

Next Prime: 28657

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 ² × 191

Divisors: 1, 2, 3, 5, 6, 10, 15, 25, 30, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111111101010

Octal: 67752

Duodecimal: 146B6

Hexadecimal: 6fea

Square: 820822500

Square Root: 169.26310879810757

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

First of triples of consecutive happy numbers, i.e., the first of three consecutive integers each of which is a happy number (A007770). A72494

a(n) = 28·2ⁿ - 22. A305164

Smallest number k such that kⁿ is the sum of numbers in a twin prime pair. A195336

Number of nondecreasing sequences of 4 1..n integers with no element dividing the sequence sum. A212871

Triangle arising in enumeration of maps on projective plane. A58893

Numbers k such that k and k² use only the digits 0, 2, 5, 6 and 8. A136913

a(1)=2. For n >=2, a(n) = the least integer >= a(n-1) that is not coprime to both a(n-1)+1 and a(n-1). A140525

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 437", based on the 5-celled von Neumann neighborhood. A272155

Number of n X 3 0..2 arrays with no element equal to more than one of its king-move neighbors and with new values introduced in order 0 sequentially upwards. A280854

a(0)=1; for n>0, a(n) is the number of rooted 3-regular maps with 2n vertices on the projective plane. A322928