Properties of the Number 2648

Two Thousand Six Hundred Forty-Eight

Basics

Value: 2647 → 2648 → 2649

Parity: even

Prime: No

Previous Prime: 2647

Next Prime: 2657

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 331

Divisors: 1, 2, 4, 8, 331, 662, 1324, 2648

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101001011000

Octal: 5130

Duodecimal: 1648

Hexadecimal: a58

Square: 7011904

Square Root: 51.45872132107443

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

a(n) = 6·n² + 2 for n > 0, a(0)=1. A5897

Numbers k such that 2^k + 7 is prime. A57195

Number of plane partitions of n with at most two rows. A990

Number of cyclic compositions (necklaces of positive integers) summing to n that have only one part or whose adjacent parts (including the last with first) are coprime. A318728

Numbers k such that lcm(1,2,3,...,k)/5 equals the denominator of the k-th harmonic number H(k). A112814

T(n,k)=Number of length-n 0..k arrays with no repeated value differing from the previous repeated value by other than one. A269537

a(n) = a(n-1) + a(m) for n >= 4, where m = 2^p+1 + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1 and a(2) = a(3) = 3. A50065

Sum of smallest parts of all partitions of n into distinct parts. A92265

Number of non-isomorphic multiset partitions of weight n with no constant parts or vertices that appear in only one part. A321760

Numbers divisible by at least three of their digits, all different and >1. A187398