Properties of the Number -7626

Six Hundred Twenty-Six

Basics

Value: -7627 → -7626 → -7625

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 31 × 41

Divisors: 1, 2, 3, 6, 31, 41, 62, 82, 93, 123

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110111001010

Octal: -16712

Duodecimal: -44B6

Hexadecimal: -1dca

Square: 58155876

Square Root: 87.3269717784832

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 ∏_k>=1 (1 - 3·x^k). A292128

Sequence is {a(4,n)}, where a(m,n) is defined at sequence A110665. A110669

Triangle t(n,m) = -A000396(n)+A000396(m)+A000396(n-m) read by rows. A178062

a(n) = 2·n*(4·n - 1). A14635

Staggered diagonal of triangular spiral in A051682. A81266

E.g.f. satisfies A(x)^A(x) = 1/(1 - x·A(x)). A141209

Number of edges in a figure made up of a row of n adjacent congruent rectangles upon drawing diagonals of all possible rectangles. A331757

The first of three consecutive triangular numbers the sum of which is equal to the sum of three consecutive primes. A298168

Positive integers not expressible as the sum of a prime and a triangular number. A76768

Array read by antidiagonals: T(n,k) is the number of chiral pairs of color patterns (set partitions) in a cycle of length n using k or fewer colors (subsets). A320742