1378834 has 8 divisors (see below), whose sum is σ = 2139660. Its totient is φ = 665616.

The previous prime is 1378831. The next prime is 1378841. The reversal of 1378834 is 4388731.

It can be written as a sum of positive squares in 2 ways, for example, as 1357225 + 21609 = 1165^2 + 147^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1378834.

It is not an unprimeable number, because it can be changed into a prime (1378831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11829 + ... + 11944.

2^1378834 is an apocalyptic number.

1378834 is a deficient number, since it is larger than the sum of its proper divisors (760826).

1378834 is a wasteful number, since it uses less digits than its factorization.

1378834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23804.

The product of its digits is 16128, while the sum is 34.

The square root of 1378834 is about 1174.2376250146. The cubic root of 1378834 is about 111.3022630340.

The spelling of 1378834 in words is "one million, three hundred seventy-eight thousand, eight hundred thirty-four".