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Properties of the Number 2790

Two Thousand Seven Hundred Ninety

Basics

Value: 2789 → 2790 → 2791

Parity: even

Prime: No

Previous Prime: 2789

Next Prime: 2791

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 2 × 5 × 31

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 101011100110

Octal: 5346

Duodecimal: 1746

Hexadecimal: ae6

Square: 7784100

Square Root: 52.820450584977024

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

Number of binary partitions: number of partitions of 2n into powers of 2. A123
6 times triangular numbers: a(n) = 3·n*(n+1). A28896
Triangular array formed from successive differences of factorial numbers. A47920
Euler's difference table: triangle read by rows, formed by starting with factorial numbers (A000142) and repeatedly taking differences. T(n,n) = n!, T(n,k) = T(n,k+1) - T(n-1,k). A68106
a(n) = n*(n+17). A132761
Numbers divisible by prime(d) for each digit d in their base-4 representation, none of which may be zero. A256874
Numbers n that raised to the powers from 1 to k (with k>=1) are multiples of the sum of their digits (n raised to k+1 must not be a multiple). Case k=4. A135189
a(n) is the smallest m for which 5m contains n consecutive identical digits. A215728
4th forward differences of factorial numbers A000142. A1688
Numbers k for which nontrivial positive magic squares of exactly 6 different orders with magic sum k exist. For a definition of nontrivial positive magic squares, see A125005. A125013