808221828 has 24 divisors (see below), whose sum is σ = 1890159040. Its totient is φ = 268791840.

The previous prime is 808221797. The next prime is 808221833. The reversal of 808221828 is 828122808.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71443 + ... + 81978.

Almost surely, 2^808221828 is an apocalyptic number.

It is an amenable number.

808221828 is an abundant number, since it is smaller than the sum of its proper divisors (1081937212).

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

808221828 is a wasteful number, since it uses less digits than its factorization.

808221828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153867 (or 153865 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 39.

The square root of 808221828 is about 28429.2424802350. The cubic root of 808221828 is about 931.4871293315.

The spelling of 808221828 in words is "eight hundred eight million, two hundred twenty-one thousand, eight hundred twenty-eight".