998888772 has 48 divisors (see below), whose sum is σ = 2665958400. Its totient is φ = 285155232.

The previous prime is 998888749. The next prime is 998888773. The reversal of 998888772 is 277888899.

998888772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (998888773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110479 + ... + 119177.

It is an arithmetic number, because the mean of its divisors is an integer number (55540800).

Almost surely, 2^998888772 is an apocalyptic number.

It is an amenable number.

998888772 is an abundant number, since it is smaller than the sum of its proper divisors (1667069628).

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

998888772 is a wasteful number, since it uses less digits than its factorization.

998888772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10080 (or 10078 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 66.

The square root of 998888772 is about 31605.2016604862. The cubic root of 998888772 is about 999.6294533788.

The spelling of 998888772 in words is "nine hundred ninety-eight million, eight hundred eighty-eight thousand, seven hundred seventy-two".