Properties of the Number 1485

One Thousand Four Hundred Eighty-Five

Basics

Value: 1484 → 1485 → 1486

Parity: odd

Prime: No

Previous Prime: 1483

Next Prime: 1487

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 11

Divisors: 1, 3, 5, 9, 11, 15, 27, 33, 45, 55

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10111001101

Octal: 2715

Duodecimal: A39

Hexadecimal: 5cd

Square: 2205225

Square Root: 38.535697735995385

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 (16·10^k - 31)/3 is prime. A270929

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

Numbers k that divide the (right) concatenation of all numbers <= k written in base 25 (most significant digit on left). A29470

Numbers having k prime factors (counted with multiplicity), the largest of which is the k-th prime. A106529

4-dimensional figurate numbers: a(n) = n·binomial(n+2, 3). A2417

Balanced numbers: numbers k such that φ(k) (A000010) divides σ(k) (A000203). A20492

Number of integer partitions of n whose smallest part is equal to the number of parts. A6141

Tritriangular numbers: a(n) = binomial(binomial(n,2),2) = n*(n+1)*(n-1)*(n-2)/8. A50534

Triangle of Bessel numbers read by rows: T(n,k) is the number of k-matchings of the complete graph K(n). A100861

Partial sums of A299266. A299267