1284028 has 6 divisors (see below), whose sum is σ = 2247056. Its totient is φ = 642012.

The previous prime is 1284007. The next prime is 1284037. The reversal of 1284028 is 8204821.

It is a junction number, because it is equal to n+sod(n) for n = 1283993 and 1284011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160500 + ... + 160507.

2^1284028 is an apocalyptic number.

It is an amenable number.

1284028 is a deficient number, since it is larger than the sum of its proper divisors (963028).

1284028 is a wasteful number, since it uses less digits than its factorization.

1284028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321011 (or 321009 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 1284028 is about 1133.1495929488. The cubic root of 1284028 is about 108.6904778430.

Subtracting from 1284028 its sum of digits (25), we obtain a triangular number (1284003 = T₁₆₀₂).

Adding to 1284028 its reverse (8204821), we get a palindrome (9488849).

The spelling of 1284028 in words is "one million, two hundred eighty-four thousand, twenty-eight".