827447820 has 24 divisors (see below), whose sum is σ = 2316854064. Its totient is φ = 220652736.

The previous prime is 827447779. The next prime is 827447843. The reversal of 827447820 is 28744728.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6895339 + ... + 6895458.

It is an arithmetic number, because the mean of its divisors is an integer number (96535586).

Almost surely, 2^827447820 is an apocalyptic number.

It is an amenable number.

827447820 is an abundant number, since it is smaller than the sum of its proper divisors (1489406244).

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

827447820 is a wasteful number, since it uses less digits than its factorization.

827447820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13790809 (or 13790807 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 827447820 is about 28765.3927489266. The cubic root of 827447820 is about 938.8154007945.

The spelling of 827447820 in words is "eight hundred twenty-seven million, four hundred forty-seven thousand, eight hundred twenty".