Properties of the Number 2864

Two Thousand Eight Hundred Sixty-Four

Basics

Value: 2863 → 2864 → 2865

Parity: even

Prime: No

Previous Prime: 2861

Next Prime: 2879

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 179

Divisors: 1, 2, 4, 8, 16, 179, 358, 716, 1432, 2864

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100110000

Octal: 5460

Duodecimal: 17A8

Hexadecimal: b30

Square: 8202496

Square Root: 53.51635264103861

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

Number of overpartitions of n: an overpartition of n is an ordered sequence of nonincreasing integers that sum to n, where the first occurrence of each integer may be overlined. A15128

Number of integer partitions of n with no difference -2. A350842

Years in which there are five Fridays in the month of February. A141287

Array read by antidiagonals: number of ways of dividing an n X m rectangle into integer-sided rectangles. A116694

Triangle T(n,k) read by rows, giving number of k-member minimal covers of an unlabeled n-set, k=1..n. A55080

a(0) = 0; thereafter a(n) = a(n-1) + n² if a(n-1) < n², otherwise a(n) = a(n-1) - n². A76042

G.f.: ∑_{k >= 1} x^k/(1-x^k)^k+1. A81543

Positive integers n such that n⁶ + 1 is semiprime. A103854

Triangle read by rows, coefficients of the polynomials P(k, x) = (1/2) ∑_p=0..k-1 Stirling2(k, p+1)*x^p*(1-4·x)^k-1-p*(2·p+2)!/(p+1)!. A142963

BII-numbers of blobs. A326751