1438144 has 28 divisors (see below), whose sum is σ = 2980944. Its totient is φ = 687104.

The previous prime is 1438123. The next prime is 1438159. The reversal of 1438144 is 4418341.

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, 984 + ... + 1960.

2^1438144 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 1438144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490472).

1438144 is an abundant number, since it is smaller than the sum of its proper divisors (1542800).

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

1438144 is an equidigital number, since it uses as much as digits as its factorization.

1438144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012 (or 1002 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 1438144 is about 1199.2264173208. The cubic root of 1438144 is about 112.8757869718.

The spelling of 1438144 in words is "one million, four hundred thirty-eight thousand, one hundred forty-four".