Properties of the Number -2488

Four Hundred Eighty-Eight

Basics

Value: -2489 → -2488 → -2487

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 311

Divisors: 1, 2, 4, 8, 311, 622, 1244, 2488

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100110111000

Octal: -4670

Duodecimal: -1534

Hexadecimal: -9b8

Square: 6190144

Square Root: 49.879855653359705

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

Square array A(n, k) = A329644(prime(n)^k), read by falling antidiagonals: (1,1), (1,2), (2,1), (1,3), (2,2), (3,1), ... A329637

Expansion of 1/sqrt(1 - 4·x*(1-x)⁴). A361817

Q-toothpick sequence (see Comments for precise definition). A187210

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of ∏_j>=1 (1 + j·x^j)^k. A297321

Number of integer compositions of n into parts that are alternately equal and unequal. A357643

INVERT transform of (1, 3, 1, 3, 1, ...). A159612

Sum of gcd(x, y) for 1 <= x, y <= n. A18806

Riordan array (1/(1-x·C(x)³), x·C(x)), C(x) the g.f. of A000108. A236830

Number T(n,k) of labeled cyclic chord diagrams with n chords such that every chord has length at least k; triangle T(n,k), n>=1, 1<=k<=n, read by rows. A324428

Sequence of coefficients arising in connection with a rapidly converging series for π. A5148