Properties of the Number 1928

One Thousand Nine Hundred Twenty-Eight

Basics

Value: 1927 → 1928 → 1929

Parity: even

Prime: No

Previous Prime: 1913

Next Prime: 1931

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 241

Divisors: 1, 2, 4, 8, 241, 482, 964, 1928

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11110001000

Octal: 3610

Duodecimal: 1148

Hexadecimal: 788

Square: 3717184

Square Root: 43.9089968002003

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 distinct values taken by 2²^...² (with n 2's and parentheses inserted in all possible ways). A2845

a(n) = (n + 3)² - 8. A28884

Numbers m such that there are precisely 15 groups of order m. A294156

Number of connected cyclic conjugacy classes of subgroups of the symmetric group. A218970

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 7. A252384

Partial sums of A097988 (d₃(n)²). A330570

T(n,k)=Number of -k..k arrays x(0..n+2) of n+3 elements with zero sum and no two or three adjacent elements summing to zero. A200430

Sum of the even parts appearing among the second largest parts of the partitions of n into 3 parts. A309690

Given M = triangle A122196 as an infinite lower triangular matrix, this sequence is lim_k->infinity M^k. A171238

Number of integer partitions of n whose distinct parts have no binary containments. A325109