Properties of the Number -6628

Six Hundred Twenty-Eight

Basics

Value: -6629 → -6628 → -6627

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 1657

Divisors: 1, 2, 4, 1657, 3314, 6628

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100111100100

Octal: -14744

Duodecimal: -3A04

Hexadecimal: -19e4

Square: 43930384

Square Root: 81.41252974819048

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

Triangle T(n,k) = ∑_j=0..k Stirling1(n, n-j)*binomial(n,j) + ∑_j=0..n-k Stirling1(n, n-j)*binomial(n,j), read by rows. A176154

Number of different products of partitions of n; number of partitions of n into prime parts (1 included); number of distinct orders of Abelian subgroups of symmetric group S_n. A34891

Number of nonempty subsets of {1..n} whose geometric mean is an integer. A326027

Number of primes between n·100000 and (n+1)*100000. A38825

Number of integer partitions of n such that the maximum is less than twice the median. A361858

E.g.f. satisfies A(x) = 1 + x·A(x)⁴*exp(x·A(x)⁴). A364989

Numbers k such that the digit sum of 167^k is divisible by k. A175552

T(n,k)=Number of nXk 0..2 arrays with values 0..2 introduced in row major order and each element equal to one or two horizontal and vertical neighbors. A199647

Numbers that are the sum of eight fourth powers in exactly four ways. A345836

Average of terms of n-th row of A077321. A77325