Properties of the Number 1872

One Thousand Eight Hundred Seventy-Two

Basics

Value: 1871 → 1872 → 1873

Parity: even

Prime: No

Previous Prime: 1871

Next Prime: 1873

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ² × 13

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 13, 16

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11101010000

Octal: 3520

Duodecimal: 1100

Hexadecimal: 750

Square: 3504384

Square Root: 43.266615305567875

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

Coefficients in expansion of Eisenstein series E₂ (also called E₁ or G₂). A6352

Number of partitions of n-set into odd blocks. A3724

a(n) = n²*(n+1). A11379

Numbers that are divisible by exactly 7 primes counting multiplicity. A46308

First differences of A025475, powers of a prime but not prime. A53707

Expansion of g.f.: (1+x)/(1 - 12·x). A170732

a(n) = σ(n)*φ(n). A62354

θ series of D₄ lattice; Fourier coefficients of Eisenstein series E_γ,2. A4011

Numbers k such that σ(k) > 3·k. A68403

Multiples of 18 containing a 18 in their decimal representation. A121038