Properties of the Number 7920

Seven Thousand Nine Hundred Twenty

Basics

Value: 7919 → 7920 → 7921

Parity: even

Prime: No

Previous Prime: 7919

Next Prime: 7927

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ² × 5 × 11

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111011110000

Octal: 17360

Duodecimal: 4700

Hexadecimal: 1ef0

Square: 62726400

Square Root: 88.99438184514796

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

8 times triangular numbers: a(n) = 4·n*(n+1). A33996

a(n) = n! * number of partitions of n. A53529

Partial sums of A001654, or sum of the areas of the first n Fibonacci rectangles. A64831

Products of 4 consecutive integers: a(n) = n*(n-1)*(n-2)*(n-3). A52762

a(n) = (prime(n)-1)*(prime(n)+1). A84920

Triangle S(n, k) by rows: coefficients of 2^(n-1/2)*(x^1/2*d/dx)ⁿ when n is odd, and of 2^n/2*(x^1/2*d/dx)ⁿ when n is even. A223168

Order of the group SL(2,Z_n). A56

Orders of noncyclic simple groups (without repetition). A1034

a(n) = (n+7)!/7!. A49388

a(n) = Fibonacci(n)*Fibonacci(n+2). A59929