1380328 has 8 divisors (see below), whose sum is σ = 2588130. Its totient is φ = 690160.

The previous prime is 1380319. The next prime is 1380329. The reversal of 1380328 is 8230831.

It can be written as a sum of positive squares in only one way, i.e., 1205604 + 174724 = 1098^2 + 418^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1380329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86263 + ... + 86278.

2^1380328 is an apocalyptic number.

It is an amenable number.

1380328 is a deficient number, since it is larger than the sum of its proper divisors (1207802).

1380328 is a wasteful number, since it uses less digits than its factorization.

1380328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172547 (or 172543 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1380328 is about 1174.8736102237. The cubic root of 1380328 is about 111.3424480886.

It can be divided in two parts, 13803 and 28, that added together give a palindrome (13831).

The spelling of 1380328 in words is "one million, three hundred eighty thousand, three hundred twenty-eight".