981227828 has 36 divisors (see below), whose sum is σ = 2084701920. Its totient is φ = 395786112.

The previous prime is 981227783. The next prime is 981227833. The reversal of 981227828 is 828722189.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 52538 + ... + 68721.

Almost surely, 2^981227828 is an apocalyptic number.

It is an amenable number.

981227828 is an abundant number, since it is smaller than the sum of its proper divisors (1103474092).

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

981227828 is a wasteful number, since it uses less digits than its factorization.

981227828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121304 (or 121285 counting only the distinct ones).

The product of its digits is 258048, while the sum is 47.

The square root of 981227828 is about 31324.5563097069. The cubic root of 981227828 is about 993.7030408674.

The spelling of 981227828 in words is "nine hundred eighty-one million, two hundred twenty-seven thousand, eight hundred twenty-eight".