Properties of the Number 4845

Four Thousand Eight Hundred Forty-Five

Basics

Value: 4844 → 4845 → 4846

Parity: odd

Prime: No

Previous Prime: 4831

Next Prime: 4861

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 17 × 19

Divisors: 1, 3, 5, 15, 17, 19, 51, 57, 85, 95

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1001011101101

Octal: 11355

Duodecimal: 2979

Hexadecimal: 12ed

Square: 23474025

Square Root: 69.60603422117941

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

Binomial coefficient binomial(n,4) = n*(n-1)*(n-2)*(n-3)/24. A332

Triangle read by rows: T(n, k) = binomial(2n, 2k). A86645

Binomial coefficients binomial(5n,n). A1449

Pentagonal numbers with odd index: a(n) = (2·n+1)*(3·n+1). A33570

Square array, read by antidiagonals, where T(n,k) = binomial(2^k + n-1, k). A136555

Completely multiplicative function with a(prime(k)) = prime(k)*prime(k+1). A191002

Squarefree integers m > 1 such that if prime p divides m, then the sum of the base p digits of m is at least p. A324315

Table by antidiagonals of number of ways of choosing k items from n·k. A60539

Binomial coefficient C(4n,n-1). A4331

a(n) = binomial(2ⁿ + n, n). A132683