988022868 has 144 divisors (see below), whose sum is σ = 2865139200. Its totient is φ = 263583936.

The previous prime is 988022863. The next prime is 988022887. The reversal of 988022868 is 868220889.

It is a self number, because there is not a number n which added to its sum of digits gives 988022868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988022863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 580683 + ... + 582381.

It is an arithmetic number, because the mean of its divisors is an integer number (19896800).

Almost surely, 2^988022868 is an apocalyptic number.

988022868 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988022868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432569600).

988022868 is an abundant number, since it is smaller than the sum of its proper divisors (1877116332).

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

988022868 is a wasteful number, since it uses less digits than its factorization.

988022868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786 (or 1777 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 51.

The square root of 988022868 is about 31432.8310528975. The cubic root of 988022868 is about 995.9915766775.

The spelling of 988022868 in words is "nine hundred eighty-eight million, twenty-two thousand, eight hundred sixty-eight".