Properties of the Number 4015

Four Thousand Fifteen

Basics

Value: 4014 → 4015 → 4016

Parity: odd

Prime: No

Previous Prime: 4013

Next Prime: 4019

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 5 × 11 × 73

Divisors: 1, 5, 11, 55, 73, 365, 803, 4015

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 111110101111

Octal: 7657

Duodecimal: 23A7

Hexadecimal: faf

Square: 16120225

Square Root: 63.36402764976355

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

Expansion of 1/((1+x)*(1-x)⁵). A1752

Numbers k such that 9^k + 8^k-1 is prime. A93795

Toothpick sequence on hexagonal net. A182840

a(n) = n*(n + 1)*(2·n² + 2·n - 1)/6. A6324

Differences of two positive 4th powers. A147857

a(n) = (3·n+1)*(4·n+1). A33577

Triangle, read by rows of n² terms, where row n equals the coefficients in the series reversion of the function G(y,n)-1 such that: y = ∑_m>=1 1/G(y,n)^2·n*m * ∏_k=1..m (1 - 1/G(y,n)^2·k-1). A214690

T(n,k)=Number of nXk 0..2 arrays with every element equal to either the sum mod 3 of its vertical neighbors or the sum mod 3 of its horizontal neighbors. A183483

Monotonic ordering of nonnegative differences 2ⁱ - 3^j, for 40 >= i >= 0, j >= 0. A192110

Integer averages of the set of the first positive squares up to some n². A164576