Properties of the Number 2980

Two Thousand Nine Hundred Eighty

Basics

Value: 2979 → 2980 → 2981

Parity: even

Prime: No

Previous Prime: 2971

Next Prime: 2999

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 149

Divisors: 1, 2, 4, 5, 10, 20, 149, 298, 596, 745

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 101110100100

Octal: 5644

Duodecimal: 1884

Hexadecimal: ba4

Square: 8880400

Square Root: 54.589376255824725

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 into relatively prime parts. Also aperiodic partitions. A837

a(n) = floor(eⁿ). A149

Numbers that are the sum of 5 positive 6th powers. A3361

Numbers n such that Bernoulli number B_n has denominator 330. A272183

Numbers m such that m and m+1 are consecutive factorial base Niven numbers (A118363). A328205

Triangle read by rows: T(n,k) = number of reversible string structures of length n using exactly k different symbols. A284949

Number A(n,k) of rooted identity trees with n nodes and k-colored non-root nodes; square array A(n,k), n>=0, k>=0, read by antidiagonals. A255517

T(n,k)=Number of length n+4 0..k arrays with some pair in every consecutive five terms totalling exactly k. A246892

T(n,k)=Number of length n+4 0..k arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two. A249001

Numbers k such that numerator(Bernoulli(2·k)/(2·k)) is different from numerator(Bernoulli(2·k)/(2·k*(2·k-1))). A90495