998566272 has 128 divisors (see below), whose sum is σ = 3215203200. Its totient is φ = 302584320.

The previous prime is 998566243. The next prime is 998566297. The reversal of 998566272 is 272665899.

998566272 is a `hidden beast` number, since 9 + 9 + 8 + 5 + 6 + 627 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24883 + ... + 51149.

It is an arithmetic number, because the mean of its divisors is an integer number (25118775).

Almost surely, 2^998566272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998566272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607601600).

998566272 is an abundant number, since it is smaller than the sum of its proper divisors (2216636928).

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

998566272 is a wasteful number, since it uses less digits than its factorization.

998566272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26301 (or 26283 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 998566272 is about 31600.0992403505. The cubic root of 998566272 is about 999.5218620872.

The spelling of 998566272 in words is "nine hundred ninety-eight million, five hundred sixty-six thousand, two hundred seventy-two".