1385328 has 120 divisors (see below), whose sum is σ = 4523520. Its totient is φ = 362880.

The previous prime is 1385327. The next prime is 1385333. The reversal of 1385328 is 8235831.

It is a happy number.

It is a Cunningham number, because it is equal to 1177²-1.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1385295 and 1385304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44673 + ... + 44703.

It is an arithmetic number, because the mean of its divisors is an integer number (37696).

2^1385328 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 1385328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2261760).

1385328 is an abundant number, since it is smaller than the sum of its proper divisors (3138192).

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

1385328 is a wasteful number, since it uses less digits than its factorization.

1385328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 62 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 1385328 is about 1176.9995751911. Note that the first 3 decimals coincide. The cubic root of 1385328 is about 111.4767256883.

The spelling of 1385328 in words is "one million, three hundred eighty-five thousand, three hundred twenty-eight".