1378838 has 8 divisors (see below), whose sum is σ = 2116488. Its totient is φ = 673344.

The previous prime is 1378831. The next prime is 1378841. The reversal of 1378838 is 8388731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378831) 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, 7931 + ... + 8102.

It is an arithmetic number, because the mean of its divisors is an integer number (264561).

2^1378838 is an apocalyptic number.

1378838 is a deficient number, since it is larger than the sum of its proper divisors (737650).

1378838 is a wasteful number, since it uses less digits than its factorization.

1378838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16078.

The product of its digits is 32256, while the sum is 38.

The square root of 1378838 is about 1174.2393282462. The cubic root of 1378838 is about 111.3023706632.

The spelling of 1378838 in words is "one million, three hundred seventy-eight thousand, eight hundred thirty-eight".