Properties of the Number 1860

One Thousand Eight Hundred Sixty

Basics

Value: 1859 → 1860 → 1861

Parity: even

Prime: No

Previous Prime: 1847

Next Prime: 1861

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 31

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11101000100

Octal: 3504

Duodecimal: 10B0

Hexadecimal: 744

Square: 3459600

Square Root: 43.12771730569565

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

4 times triangular numbers: a(n) = 2·n*(n+1). A46092

a(n) = σ(n)*φ(n). A62354

Number of 2n-step polygons on cubic lattice. A2896

Numbers k such that k² divides 11^k - 1. A127092

Numbers k such that k² divides 7^k-1. A127107

Generalized 26-gonal (or icosihexagonal) numbers: m*(12·m - 11) with m = 0, +1, -1, +2, -2, +3, -3, ... A316724

Generalized 30-gonal (or triacontagonal) numbers: m*(14·m - 13) with m = 0, +1, -1, +2, -2, +3, -3, ... A316729

Number of strict integer partitions of n that are empty or have smallest part not dividing all the others. A341450

a(n) = 4·n*(2·n + 1). A33586

Number of integer partitions of n of even length whose greatest multiplicity is at most half their length. A338914