820252 has 6 divisors (see below), whose sum is σ = 1435448. Its totient is φ = 410124.

The previous prime is 820247. The next prime is 820271. The reversal of 820252 is 252028.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 102528 + ... + 102535.

2⁸²⁰²⁵² is an apocalyptic number.

It is an amenable number.

820252 is a deficient number, since it is larger than the sum of its proper divisors (615196).

820252 is a wasteful number, since it uses less digits than its factorization.

820252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205067 (or 205065 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 820252 is about 905.6776468479. The cubic root of 820252 is about 93.6086034413.

The spelling of 820252 in words is "eight hundred twenty thousand, two hundred fifty-two".