820235 has 8 divisors (see below), whose sum is σ = 1060080. Its totient is φ = 605664.

The previous prime is 820231. The next prime is 820241. The reversal of 820235 is 532028.

820235 is nontrivially palindromic in base 8.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 820235 - 2² = 820231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (820231) 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, 6245 + ... + 6374.

It is an arithmetic number, because the mean of its divisors is an integer number (132510).

2⁸²⁰²³⁵ is an apocalyptic number.

820235 is a deficient number, since it is larger than the sum of its proper divisors (239845).

820235 is a wasteful number, since it uses less digits than its factorization.

820235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12637.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 820235 is about 905.6682615616. The cubic root of 820235 is about 93.6079567468.

It can be divided in two parts, 82023 and 5, that added together give a palindrome (82028).

The spelling of 820235 in words is "eight hundred twenty thousand, two hundred thirty-five".