Properties of the Number 3720

Three Thousand Seven Hundred Twenty

Basics

Value: 3719 → 3720 → 3721

Parity: even

Prime: No

Previous Prime: 3719

Next Prime: 3727

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 5 × 31

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010001000

Octal: 7210

Duodecimal: 21A0

Hexadecimal: e88

Square: 13838400

Square Root: 60.991802727907626

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

Balanced numbers: numbers k such that φ(k) (A000010) divides σ(k) (A000203). A20492

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

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

a(n) = prime(n+1)² - prime(n)². A69482

Numbers k such that k² divides 7^k-1. A127107

2nd differences of factorial numbers. A1564

Triangular array formed from successive differences of factorial numbers. A47920

a(n) is both the sum of n+1 consecutive integers and the sum of the n immediately higher consecutive integers. A59270

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

Numbers that can be expressed as the difference of the squares of primes in exactly four distinct ways. A92000