1438328 has 16 divisors (see below), whose sum is σ = 2814480. Its totient is φ = 687808.

The previous prime is 1438303. The next prime is 1438379. The reversal of 1438328 is 8238341.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438328.

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, 3725 + ... + 4092.

It is an arithmetic number, because the mean of its divisors is an integer number (175905).

2^1438328 is an apocalyptic number.

It is an amenable number.

1438328 is a deficient number, since it is larger than the sum of its proper divisors (1376152).

1438328 is a wasteful number, since it uses less digits than its factorization.

1438328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846 (or 7842 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 1438328 is about 1199.3031309890. The cubic root of 1438328 is about 112.8806006434.

The spelling of 1438328 in words is "one million, four hundred thirty-eight thousand, three hundred twenty-eight".