827809530 has 32 divisors (see below), whose sum is σ = 2020420800. Its totient is φ = 217007232.

The previous prime is 827809529. The next prime is 827809573. The reversal of 827809530 is 35908728.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232075 + ... + 235614.

It is an arithmetic number, because the mean of its divisors is an integer number (63138150).

Almost surely, 2^827809530 is an apocalyptic number.

827809530 is an abundant number, since it is smaller than the sum of its proper divisors (1192611270).

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

827809530 is a wasteful number, since it uses less digits than its factorization.

827809530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467758.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 827809530 is about 28771.6793044827. The cubic root of 827809530 is about 938.9521785833.

The spelling of 827809530 in words is "eight hundred twenty-seven million, eight hundred nine thousand, five hundred thirty".