Properties of the Number 1802

One Thousand Eight Hundred Two

Basics

Value: 1801 → 1802 → 1803

Parity: even

Prime: No

Previous Prime: 1801

Next Prime: 1811

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 17 × 53

Divisors: 1, 2, 17, 34, 53, 106, 901, 1802

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11100001010

Octal: 3412

Duodecimal: 1062

Hexadecimal: 70a

Square: 3247204

Square Root: 42.44997055358225

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 points on surface of tetrahedron; coordination sequence for sodalite net (equals 2·n²+2 for n > 0). A5893

Number of partitions of n whose reciprocal sum is an integer. A58360

Coordination sequence for body-centered tetragonal lattice. A8527

Number of integer partitions of n containing their multiset of multiplicities (as a submultiset). A325702

a(n) = prime(n+1)² + prime(n)². A69484

a(n) = n*(13·n - 9)/2. A226488

Number of Golomb partitions of n. A325858

Number of ordered pairs (i,j), 0 <= i,j < n, for which (i & j) is nonzero, where & is the bitwise AND operator. A80572

T-toothpick sequence (see Comments lines for definition). A160172

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 5 6 or 7. A252679