820282 has 4 divisors (see below), whose sum is σ = 1230426. Its totient is φ = 410140.

The previous prime is 820279. The next prime is 820319. The reversal of 820282 is 282028.

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., 741321 + 78961 = 861^2 + 281^2 .

It is a nialpdrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205069 + ... + 205072.

2⁸²⁰²⁸² is an apocalyptic number.

820282 is a deficient number, since it is larger than the sum of its proper divisors (410144).

820282 is a wasteful number, since it uses less digits than its factorization.

820282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410143.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 820282 is about 905.6942088807. The cubic root of 820282 is about 93.6097446450.

The spelling of 820282 in words is "eight hundred twenty thousand, two hundred eighty-two".