1384128 has 84 divisors (see below), whose sum is σ = 4160520. Its totient is φ = 456192.

The previous prime is 1384121. The next prime is 1384139. The reversal of 1384128 is 8214831.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 (1384121) 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, 15508 + ... + 15596.

It is an arithmetic number, because the mean of its divisors is an integer number (49530).

2^1384128 is an apocalyptic number.

1384128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1384128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2080260).

1384128 is an abundant number, since it is smaller than the sum of its proper divisors (2776392).

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

1384128 is an frugal number, since it uses more digits than its factorization.

1384128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 94 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1384128 is about 1176.4896939625. The cubic root of 1384128 is about 111.4445285685. Note that the first 3 decimals are identical.

Adding to 1384128 its reverse (8214831), we get a palindrome (9598959).

The spelling of 1384128 in words is "one million, three hundred eighty-four thousand, one hundred twenty-eight".