Properties of the Number 7904

Seven Thousand Nine Hundred Four

Basics

Value: 7903 → 7904 → 7905

Parity: even

Prime: No

Previous Prime: 7901

Next Prime: 7907

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁵ × 13 × 19

Divisors: 1, 2, 4, 8, 13, 16, 19, 26, 32, 38

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111011100000

Octal: 17340

Duodecimal: 46A8

Hexadecimal: 1ee0

Square: 62473216

Square Root: 88.90444308357148

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

Array read by descending antidiagonals: A(n,k) is the number of chiral pairs of colorings of the edges of a regular n-dimensional simplex using up to k colors. A327085

Integers setting a record for the absolute minimal difference from the imaginary part of a nontrivial zero of the Riemann ζ function. A255742

Number of chiral pairs of colorings of the edges (or triangular faces) of a regular 4-dimensional simplex with n available colors. A331352

G.f.: ∑_n>=0 xⁿ * (1 + xⁿ)ⁿ / (1 + xⁿ⁺¹)ⁿ⁺¹. A323557

Array read by descending antidiagonals: T(n,k) is the number of chiral pairs of colorings of the triangular faces of a regular n-dimensional simplex using k or fewer colors. A337885

9-step Fibonacci sequence starting with 0,0,0,0,1,0,0,0,0. A251749

Numbers which are representable as a sum of thirteen but no fewer consecutive nonnegative integers. A270300

a(n) = ∑_k=0..n binomial(3·n-2·k+2,n-k). A390239

T(n,k)=Number of (n+2)Xk 0..3 arrays with all rows having a nonnegative second derivative, and all and columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative. A223495

G.f. satisfies: A(x) = 1 + x·A(x)² / (A(I·x) * A(-I·x)). A212527