Properties of the Number 4465

Four Thousand Four Hundred Sixty-Five

Basics

Value: 4464 → 4465 → 4466

Parity: odd

Prime: No

Previous Prime: 4463

Next Prime: 4481

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 19 × 47

Divisors: 1, 5, 19, 47, 95, 235, 893, 4465

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000101110001

Octal: 10561

Duodecimal: 2701

Hexadecimal: 1171

Square: 19936225

Square Root: 66.82065548915246

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

Centered 9-gonal (also known as nonagonal or enneagonal) numbers. Every third triangular number, starting with a(1)=1. A60544

Generalized 28-gonal (or icosioctagonal) numbers: m*(13·m - 12) with m = 0, +1, -1, +2, -2, +3, -3, ... A303812

Odd triangular numbers. A14493

a(n) = (2·n-1)*(4·n-1). A33567

Number of integer partitions of n with more parts than distinct divisors of parts. A371171

28-gonal numbers: a(n) = n*(13·n - 12). A161935

Number of partitions of n such that 2*(least part) < greatest part. A237820

Positive integers not expressible as the sum of a prime and a triangular number. A76768

Triangular numbers representable as x·y+x+y such that·and y are triangular numbers, x>=y>1. A259746

a(n) = (n + 3)*(n² + 6·n + 2)/6. A5286