Properties of the Number 18465

Eighteen Thousand Four Hundred Sixty-Five

Basics

Value: 18464 → 18465 → 18466

Parity: odd

Prime: No

Previous Prime: 18461

Next Prime: 18481

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 1231

Divisors: 1, 3, 5, 15, 1231, 3693, 6155, 18465

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100000100001

Octal: 44041

Duodecimal: A829

Hexadecimal: 4821

Square: 340956225

Square Root: 135.88598161694236

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

a(n) = 3·a(n-2) - a(n-3), with a(0)=0, a(1)=a(2)=-3. A215665

Subgroups of nimber addition interpreted as binary numbers. A190939

Records in A268642. A268529

a(n) is the number of reducible monic quartic polynomials (x⁴ + r·x³ + s·x² + t·x + u) with integer coefficients bounded by naïve height n (abs(r), abs(s), abs(t), abs(u) <= n). A358399

a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero dodecahedral numbers in exactly n ways, or -1 if no such integer exists. A360216

Numbers k such that 51·2^k+1 is prime. A32375

The largest part summed over all partitions of n in which every integer from the smallest part to the largest part occurs. A117469

Number of nonnegative sequences of integers S with the properties that (1) sum(S) + length(S) = n and (2) there exists a nonnegative sequence whose Euler transform begins with S starting at index 1. A367205

E.g.f. A(x) satisfies the property that the sum of the coefficients of x^k, k=0..n, in A(x)ⁿ equals (n+1)ⁿ. A244589

Divisors of 456. A18465