1388328 has 16 divisors (see below), whose sum is σ = 3470880. Its totient is φ = 462768.

The previous prime is 1388327. The next prime is 1388353. The reversal of 1388328 is 8238831.

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

It is not an unprimeable number, because it can be changed into a prime (1388323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28900 + ... + 28947.

It is an arithmetic number, because the mean of its divisors is an integer number (216930).

2^1388328 is an apocalyptic number.

It is an amenable number.

1388328 is an abundant number, since it is smaller than the sum of its proper divisors (2082552).

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

1388328 is a wasteful number, since it uses less digits than its factorization.

1388328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57856 (or 57852 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 1388328 is about 1178.2733129457. The cubic root of 1388328 is about 111.5571372247.

The spelling of 1388328 in words is "one million, three hundred eighty-eight thousand, three hundred twenty-eight".