Properties of the Number 39672

Thirty-Nine Thousand Six Hundred Seventy-Two

Basics

Value: 39671 → 39672 → 39673

Parity: even

Prime: No

Previous Prime: 39671

Next Prime: 39679

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 19 × 29

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 19

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001101011111000

Octal: 115370

Duodecimal: 1AB60

Hexadecimal: 9af8

Square: 1573867584

Square Root: 199.17831207237398

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

Sum T(n,k) of the k-th entries in all cycles of all permutations of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows. A285793

Number of 3 X 3 semimagic squares with distinct positive values and magic sum n. A173547

Number of ways to write n as an ordered sum of ten powers of 2. A342254

Number of nondecreasing integer sequences of length 9 with sum zero and sum of absolute values 2n. A158143

Sum of the second entries in all cycles of all permutations of [n]. A285795

Integer part of log(n!)^{1 + log(1 + log(1 + n})). A62445

Number of nX5 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 nX5 array. A219701

Number of (n+1) X (5+1) 0..1 arrays with every 2 X 2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically. A253394

Periodicity of the reciprocal of the Mersenne numbers (A001348). A100491

a(0) = 0; for n>0, a(n) = period length of the decimal expansion of the number ∑_i>=1 2^-n·i. Also period length of the fractions 1/b(n), where b(n) = 2·b(n-1) + 1, with b(1)=1. A136273