ℕ atory
Play Now

Properties of the Number 68040

Sixty-Eight Thousand Forty

Basics

Value: 68039 → 68040 → 68041

Parity: even

Prime: No

Previous Prime: 68023

Next Prime: 68041

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 3 × 3 5 × 5 × 7

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000100111001000

Octal: 204710

Duodecimal: 33460

Hexadecimal: 109c8

Square: 4629441600

Square Root: 260.8447814314099

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

Triangle related to the asymptotic expansion of E(x,m=3,n). A163932
Square of lower triangular matrix of A056857 (successive equalities in set partitions of n). A78937
Third column of PE2. A129324
Numbers k such that k6 + 1091 is prime. A66386
a(n) = (3·n+9)!!!/9!!!, related to A032031 ((3·n)!!! triple factorials). A51609
Triangle read by rows: T(n,k) is the number of labeled commutative monoids of order n with k idempotents. A58159
Number of labeled Abelian groups of order n. A34382
Row 9 of array in A288580. A92974
Triangle read by rows: T(n, k) = S2[3,1](n, k)*k! with the Sheffer triangle S2[3,1] = (exp(x), exp(3·x) -1) given in A282629. A284861
Denominators of coefficients in S(x) where: C(x)1/2 - S(x)1/2 = 1 such that C'(x)*S(x)1/2 = S'(x)*C(x)1/2 = 2·x*C(x). A299433