Properties of the Number 18469

Eighteen Thousand Four Hundred Sixty-Nine

Basics

Value: 18468 → 18469 → 18470

Parity: odd

Prime: No

Previous Prime: 18461

Next Prime: 18481

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 11 × 23 × 73

Divisors: 1, 11, 23, 73, 253, 803, 1679, 18469

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100000100101

Octal: 44045

Duodecimal: A831

Hexadecimal: 4825

Square: 341103961

Square Root: 135.9006990416164

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

Numbers k such that k, k+1, k+2 and k+3 have the same number of divisors. A6601

Numbers k such that gcd(3k,8^k+1) = 3 but k does not divide the numerator of B(2k) (the Bernoulli numbers). A70193

a(n) = ∑_i=0..n digsum(i)³, where digsum(i) = A007953(i). A231688

Number of partitions of n such that (number parts having multiplicity 1) is a part and (number of parts > 1) is a part. A241511

a(n) = (2·n+1)*(7·n+1). A33572

Odd 9-gonal (or enneagonal) numbers. A28991

Number of (n+1) X (1+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically. A253152

Number of distinct sums of n complex n-th roots of 1. A299754

Nonsemiprimes in A306097 = A121707 \ A267999. A321488

a(n) is the numerator of the sum of the reciprocals of the positive integers k, k<=n, where every positive integer <= k and coprime to k is also coprime to n. A126261