Properties of the Number 3780

Three Thousand Seven Hundred Eighty

Basics

Value: 3779 → 3780 → 3781

Parity: even

Prime: No

Previous Prime: 3779

Next Prime: 3793

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ³ × 5 × 7

Divisors: 1, 2, 3, 4, 5, 6, 7, 9, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111011000100

Octal: 7304

Duodecimal: 2230

Hexadecimal: ec4

Square: 14288400

Square Root: 61.48170459575759

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 combinations which can be taken from the integer partitions of n. Total number of cases in the (n,m)-fragmentation process. A122768

Ramanujan's largely composite numbers, defined to be numbers m such that d(m) >= d(k) for k = 1 to m-1. A67128

6 times triangular numbers: a(n) = 3·n*(n+1). A28896

Unitary harmonic numbers (those for which the unitary harmonic mean is an integer). A6086

a(n) is the number of integers m which take n steps to reach 1 in '3x+1' problem. A5186

Numbers n such that the decimal expansions of both n and n² have 0 as smallest digit and 8 as largest digit. A256708

Triangle of multinomial coefficients, read by rows (version 2). A80575

Heinz numbers of supernormal integer partitions. A317246

Triangle read by rows, T(n,k) = T(n-1,k) + T(n-2,k) + T(n-1,k-1) + T(n-2,k-1) and T(0,0) = 1. A63967

Numbers with exactly 4 distinct prime divisors {2,3,5,7}. A147571