Properties of the Number 465

Four Hundred Sixty-Five

Basics

Value: 464 → 465 → 466

Parity: odd

Prime: No

Previous Prime: 463

Next Prime: 467

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 31

Divisors: 1, 3, 5, 15, 31, 93, 155, 465

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010001

Octal: 721

Duodecimal: 329

Hexadecimal: 1d1

Square: 216225

Square Root: 21.563858652847824

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

Triangular numbers: a(n) = binomial(n+1,2) = n*(n+1)/2 = 0 + 1 + 2 + ... + n. A217

Number of knapsack partitions of n. A108917

Padovan sequence (or Padovan numbers): a(n) = a(n-2) + a(n-3) with a(0) = 1, a(1) = a(2) = 0. A931

Second hexagonal numbers: a(n) = n*(2·n + 1). A14105

Number of partitions of n into parts 5k+1 or 5k+4. A3114

Antisigma(n): Sum of the numbers less than n that do not divide n. A24816

Number of partitions of n into nonzero triangular numbers. A7294

Expansion of ∏_k>=1 (1 - k·x^k)^k. A266964

Sum of positive integers in smallest positive reduced residue system modulo n. a(1) = 1 by convention. A23896

Indices k such that (1/3)*(prime(k)+prime(k+1)+prime(k+2)) is a prime. A64113