838378 has 4 divisors (see below), whose sum is σ = 1257570. Its totient is φ = 419188.

The previous prime is 838367. The next prime is 838379. The reversal of 838378 is 873838.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 683929 + 154449 = 827^2 + 393^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (838379) by changing a digit.

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 as a sum of consecutive naturals, namely, 209593 + ... + 209596.

2⁸³⁸³⁷⁸ is an apocalyptic number.

838378 is a deficient number, since it is larger than the sum of its proper divisors (419192).

838378 is a wasteful number, since it uses less digits than its factorization.

838378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419191.

The product of its digits is 32256, while the sum is 37.

The square root of 838378 is about 915.6298378712. The cubic root of 838378 is about 94.2931095253.

It can be divided in two parts, 83837 and 8, that added together give a triangular number (83845 = T₄₀₉).

The spelling of 838378 in words is "eight hundred thirty-eight thousand, three hundred seventy-eight".