1228584 has 64 divisors (see below), whose sum is σ = 3594240. Its totient is φ = 342720.

The previous prime is 1228583. The next prime is 1228589. The reversal of 1228584 is 4858221.

It is not an unprimeable number, because it can be changed into a prime (1228583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11877 + ... + 11979.

It is an arithmetic number, because the mean of its divisors is an integer number (56160).

2^1228584 is an apocalyptic number.

1228584 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797120).

1228584 is an abundant number, since it is smaller than the sum of its proper divisors (2365656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228584 is a wasteful number, since it uses less digits than its factorization.

1228584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 186 counting only the distinct ones).

The product of its digits is 5120, while the sum is 30.

The square root of 1228584 is about 1108.4150847043. The cubic root of 1228584 is about 107.1029957115.

The spelling of 1228584 in words is "one million, two hundred twenty-eight thousand, five hundred eighty-four".