Properties of the Number 7245

Seven Thousand Two Hundred Forty-Five

Basics

Value: 7244 → 7245 → 7246

Parity: odd

Prime: No

Previous Prime: 7243

Next Prime: 7247

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 7 × 23

Divisors: 1, 3, 5, 7, 9, 15, 21, 23, 35, 45

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 1110001001101

Octal: 16115

Duodecimal: 4239

Hexadecimal: 1c4d

Square: 52490025

Square Root: 85.11756575466664

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 partitions of n that do not contain 1 as a part. A2865

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

Number of partitions of n that do not contain parts less than the smallest part of the partitions of n-1. A187219

Number of compositions (ordered partitions) of n that are concave-down sequences. A70211

Odd primitive abundant numbers. A6038

3 times hexagonal numbers: a(n) = 3·n*(2·n-1). A94159

Triangle read by rows giving the coefficients of formulas generating each variety of S1(n,k) (unsigned Stirling numbers of first kind). The p-th row (p>=1) contains T(i,p) for i=1 to 2·p, where T(i,p) satisfies ∑_i=1..2·p T(i,p) * C(n,i). A94216

Maximally refined partitions into distinct parts (of any natural number) with largest part n. A179822

Bisection (odd part) of number of partitions that do not contain 1 as a part A002865. A182747

7 times hexagonal numbers: a(n) = 7·n*(2·n-1). A195320