820449522 has 24 divisors (see below), whose sum is σ = 1799061264. Its totient is φ = 270187704.

The previous prime is 820449499. The next prime is 820449541. The reversal of 820449522 is 225944028.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273088 + ... + 276075.

It is an arithmetic number, because the mean of its divisors is an integer number (74960886).

Almost surely, 2^820449522 is an apocalyptic number.

820449522 is an abundant number, since it is smaller than the sum of its proper divisors (978611742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

820449522 is a wasteful number, since it uses less digits than its factorization.

820449522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549254 (or 549251 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 820449522 is about 28643.4900457329. The cubic root of 820449522 is about 936.1611669112.

The spelling of 820449522 in words is "eight hundred twenty million, four hundred forty-nine thousand, five hundred twenty-two".