834378 has 16 divisors (see below), whose sum is σ = 1697760. Its totient is φ = 273296.

The previous prime is 834367. The next prime is 834433. The reversal of 834378 is 873438.

It is a Curzon number.

It is an unprimeable number.

834378 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825 + ... + 1532.

It is an arithmetic number, because the mean of its divisors is an integer number (106110).

2⁸³⁴³⁷⁸ is an apocalyptic number.

834378 is an abundant number, since it is smaller than the sum of its proper divisors (863382).

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

834378 is a wasteful number, since it uses less digits than its factorization.

834378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421.

The product of its digits is 16128, while the sum is 33.

The square root of 834378 is about 913.4429374624. The cubic root of 834378 is about 94.1429092267.

Subtracting 834378 from its reverse (873438), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 834378 in words is "eight hundred thirty-four thousand, three hundred seventy-eight".