1304378 has 4 divisors (see below), whose sum is σ = 1956570. Its totient is φ = 652188.

The previous prime is 1304371. The next prime is 1304389. The reversal of 1304378 is 8734031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8734031 = 43 ⋅203117.

It can be written as a sum of positive squares in only one way, i.e., 877969 + 426409 = 937^2 + 653^2 .

It is not an unprimeable number, because it can be changed into a prime (1304371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326093 + ... + 326096.

2^1304378 is an apocalyptic number.

1304378 is a deficient number, since it is larger than the sum of its proper divisors (652192).

1304378 is an equidigital number, since it uses as much as digits as its factorization.

1304378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652191.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1304378 is about 1142.0936914282. The cubic root of 1304378 is about 109.2616668782.

The spelling of 1304378 in words is "one million, three hundred four thousand, three hundred seventy-eight".