1438224 has 60 divisors (see below), whose sum is σ = 3968496. Its totient is φ = 448704.

The previous prime is 1438223. The next prime is 1438231. The reversal of 1438224 is 4228341.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1438194 and 1438203.

It is not an unprimeable number, because it can be changed into a prime (1438223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17287 + ... + 17369.

2^1438224 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 1438224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1984248).

1438224 is an abundant number, since it is smaller than the sum of its proper divisors (2530272).

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

1438224 is a wasteful number, since it uses less digits than its factorization.

1438224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 107 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 1438224 is about 1199.2597716925. The cubic root of 1438224 is about 112.8778799229.

The spelling of 1438224 in words is "one million, four hundred thirty-eight thousand, two hundred twenty-four".