1219424 has 24 divisors (see below), whose sum is σ = 2449440. Its totient is φ = 597376.

The previous prime is 1219411. The next prime is 1219433. The reversal of 1219424 is 4249121.

It is a self number, because there is not a number n which added to its sum of digits gives 1219424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1337 + ... + 2055.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2^1219424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1219424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224720).

1219424 is an abundant number, since it is smaller than the sum of its proper divisors (1230016).

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

1219424 is an equidigital number, since it uses as much as digits as its factorization.

1219424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 774 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1219424 is about 1104.2753279866. The cubic root of 1219424 is about 106.8361541621.

The spelling of 1219424 in words is "one million, two hundred nineteen thousand, four hundred twenty-four".