Properties of the Number 7875

Seven Thousand Eight Hundred Seventy-Five

Basics

Value: 7874 → 7875 → 7876

Parity: odd

Prime: No

Previous Prime: 7873

Next Prime: 7877

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 ³ × 7

Divisors: 1, 3, 5, 7, 9, 15, 21, 25, 35, 45

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1111011000011

Octal: 17303

Duodecimal: 4683

Hexadecimal: 1ec3

Square: 62015625

Square Root: 88.74119674649424

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

Primorial base exp-function: digits in primorial base representation of n become the exponents of successive prime factors whose product a(n) is. A276086

Odd abundant numbers (odd numbers m whose sum of divisors exceeds 2m). A5231

Factorial base exp-function: digits in factorial base representation of n become the exponents of successive prime factors whose product a(n) is. A276076

Array read by descending antidiagonals: T(n,k) is the number of unoriented strings with n beads of k or fewer colors. A277504

3 times pentagonal numbers: 3·n*(3·n-1)/2. A62741

a(n) = (2·n+1)*(4·n+1). A14634

Number of ternary search trees on n keys. A19497

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

Numbers with exactly 3 distinct odd prime divisors {3,5,7}. A147576

Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section. A286783