Properties of the Number 47895

Forty-Seven Thousand Eight Hundred Ninety-Five

Basics

Value: 47894 → 47895 → 47896

Parity: odd

Prime: No

Previous Prime: 47881

Next Prime: 47903

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 31 × 103

Divisors: 1, 3, 5, 15, 31, 93, 103, 155, 309, 465

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1011101100010111

Octal: 135427

Duodecimal: 23873

Hexadecimal: bb17

Square: 2293931025

Square Root: 218.84926319272816

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

Smallest triangular number with digit sum n (or 0 if no such number exists). A62688

Least triangular number t such that t = prime(n)*triangular(m) for some m>0, or 0 if no such t exists. A225503

Triangular numbers with strictly increasing sum of digits. A68808

Triangular numbers T from A000217 such that (4·T+1)/13 is prime. A208294

Triangular numbers with strictly increasing product of digits. A246753

Terms of A073872 that do not change their position in the rearrangement; i.e., values of A073872(n) which equal n(n+1)/2. A73873

Hexagonal numbers (A000384) which are sum of 2 other hexagonal numbers > 0. A133215

Numerators of rational coefficients which are ratio of Brent's coefficients -A[n,2]/A343480. A380947

Triangular numbers which become primes when their rightmost digit is removed. A227936

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 929", based on the 5-celled von Neumann neighborhood. A273781