1378368 has 42 divisors (see below), whose sum is σ = 3952494. Its totient is φ = 459264.

The previous prime is 1378339. The next prime is 1378373. The reversal of 1378368 is 8638731.

It can be written as a sum of positive squares in only one way, i.e., 788544 + 589824 = 888^2 + 768^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 621 + ... + 1772.

It is an arithmetic number, because the mean of its divisors is an integer number (94107).

2^1378368 is an apocalyptic number.

1378368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1378368 is an abundant number, since it is smaller than the sum of its proper divisors (2574126).

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

1378368 is a wasteful number, since it uses less digits than its factorization.

1378368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411 (or 2398 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1378368 is about 1174.0391816290. The cubic root of 1378368 is about 111.2897228010.

The spelling of 1378368 in words is "one million, three hundred seventy-eight thousand, three hundred sixty-eight".