820078 has 16 divisors (see below), whose sum is σ = 1480320. Its totient is φ = 332856.

The previous prime is 820073. The next prime is 820093. The reversal of 820078 is 870028.

820078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (92520).

2⁸²⁰⁰⁷⁸ is an apocalyptic number.

820078 is a deficient number, since it is larger than the sum of its proper divisors (660242).

820078 is a wasteful number, since it uses less digits than its factorization.

820078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 820078 is about 905.5815810848. The cubic root of 820078 is about 93.6019839110.

The spelling of 820078 in words is "eight hundred twenty thousand, seventy-eight".