1284628 has 12 divisors (see below), whose sum is σ = 2366560. Its totient is φ = 608472.

The previous prime is 1284623. The next prime is 1284631. The reversal of 1284628 is 8264821.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1284628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8376 + ... + 8527.

2^1284628 is an apocalyptic number.

It is an amenable number.

1284628 is a deficient number, since it is larger than the sum of its proper divisors (1081932).

1284628 is a wasteful number, since it uses less digits than its factorization.

1284628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16926 (or 16924 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 1284628 is about 1133.4143108325. The cubic root of 1284628 is about 108.7074048185.

The spelling of 1284628 in words is "one million, two hundred eighty-four thousand, six hundred twenty-eight".