1378904 has 16 divisors (see below), whose sum is σ = 2737800. Its totient is φ = 648832.

The previous prime is 1378903. The next prime is 1378907. The reversal of 1378904 is 4098731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4934 + ... + 5205.

2^1378904 is an apocalyptic number.

It is an amenable number.

1378904 is a deficient number, since it is larger than the sum of its proper divisors (1358896).

1378904 is a wasteful number, since it uses less digits than its factorization.

1378904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10162 (or 10158 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1378904 is about 1174.2674312098. The cubic root of 1378904 is about 111.3041465159.

The spelling of 1378904 in words is "one million, three hundred seventy-eight thousand, nine hundred four".