998669028 has 24 divisors (see below), whose sum is σ = 2663117632. Its totient is φ = 285333984.

The previous prime is 998669017. The next prime is 998669033. The reversal of 998669028 is 820966899.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 5944375 + ... + 5944542.

Almost surely, 2^998669028 is an apocalyptic number.

It is an amenable number.

998669028 is an abundant number, since it is smaller than the sum of its proper divisors (1664448604).

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

998669028 is a wasteful number, since it uses less digits than its factorization.

998669028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11888931 (or 11888929 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 57.

The square root of 998669028 is about 31601.7250794953. The cubic root of 998669028 is about 999.5561456892.

The spelling of 998669028 in words is "nine hundred ninety-eight million, six hundred sixty-nine thousand, twenty-eight".