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Properties of the Number 15890

Fifteen Thousand Eight Hundred Ninety

Basics

Value: 15889 → 15890 → 15891

Parity: even

Prime: No

Previous Prime: 15889

Next Prime: 15901

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 7 × 227

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 227, 454

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11111000010010

Octal: 37022

Duodecimal: 9242

Hexadecimal: 3e12

Square: 252492100

Square Root: 126.05554331325537

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

Weird numbers: abundant (A005101) but not pseudoperfect (A005835). A6037
Unitary weird numbers: unitary abundant (A034683) but not unitary pseudoperfect (A293188). A64114
Number of non-equivalent ways to choose two points in an equilateral triangle grid of side n. A227327
Bi-unitary weird numbers: bi-unitary abundant numbers (A292982) that are not bi-unitary pseudoperfect (A292985). A292986
Infinitary weird numbers: infinitary abundant numbers (A129656) that are not infinitary pseudoperfect numbers (A306983). A306984
Moebius transform of binomial(n+3, 4). A117109
The number of edges formed on an isosceles triangle by straight line segments mutually connecting all vertices and all points that divide the two equal length sides into n equal parts; the base of the triangle contains no points other than its vertices. A333027
Nonexponential weird numbers: nonexponential abundant numbers (A348604) that are not equal to the sum of any subset of their nonexponential divisors. A348631
Numbers n such that 4·10n + 3·Rn + 6 is prime, where Rn = 11...1 is the repunit (A002275) of length n. A102990
a(n) = 324n2 + 2n. A158271