827981028 has 90 divisors (see below), whose sum is σ = 2517942966. Its totient is φ = 236561472.

The previous prime is 827981003. The next prime is 827981081. The reversal of 827981028 is 820189728.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 825297984 + 2683044 = 28728^2 + 1638^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 10201 + ... + 41952.

Almost surely, 2^827981028 is an apocalyptic number.

It is an amenable number.

827981028 is an abundant number, since it is smaller than the sum of its proper divisors (1689961938).

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

827981028 is a wasteful number, since it uses less digits than its factorization.

827981028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52183 (or 52165 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 827981028 is about 28774.6594766993. The cubic root of 827981028 is about 939.0170152782.

The spelling of 827981028 in words is "eight hundred twenty-seven million, nine hundred eighty-one thousand, twenty-eight".