823378 has 16 divisors (see below), whose sum is σ = 1332504. Its totient is φ = 380160.

The previous prime is 823373. The next prime is 823399. The reversal of 823378 is 873328.

It can be written as a sum of positive squares in 4 ways, for example, as 660969 + 162409 = 813^2 + 403^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823373) 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 7 ways as a sum of consecutive naturals, for example, 1876 + ... + 2272.

2⁸²³³⁷⁸ is an apocalyptic number.

823378 is a deficient number, since it is larger than the sum of its proper divisors (509126).

823378 is a wasteful number, since it uses less digits than its factorization.

823378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its digits is 8064, while the sum is 31.

The square root of 823378 is about 907.4017853189. The cubic root of 823378 is about 93.7273675737.

The spelling of 823378 in words is "eight hundred twenty-three thousand, three hundred seventy-eight".