820274 has 16 divisors (see below), whose sum is σ = 1514688. Its totient is φ = 324432.

The previous prime is 820273. The next prime is 820279. The reversal of 820274 is 472028.

It is a Curzon number.

It is a nialpdrome in base 7 and base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 820274.

It is not an unprimeable number, because it can be changed into a prime (820271) 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, 2072 + ... + 2435.

It is an arithmetic number, because the mean of its divisors is an integer number (94668).

2⁸²⁰²⁷⁴ is an apocalyptic number.

820274 is a deficient number, since it is larger than the sum of its proper divisors (694414).

820274 is a wasteful number, since it uses less digits than its factorization.

820274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4529.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 820274 is about 905.6897923682. The cubic root of 820274 is about 93.6094403267.

The spelling of 820274 in words is "eight hundred twenty thousand, two hundred seventy-four".