998128 has 10 divisors (see below), whose sum is σ = 1933904. Its totient is φ = 499056.

The previous prime is 998117. The next prime is 998147. The reversal of 998128 is 821899.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31176 + ... + 31207.

2⁹⁹⁸¹²⁸ is an apocalyptic number.

It is an amenable number.

998128 is a deficient number, since it is larger than the sum of its proper divisors (935776).

998128 is a wasteful number, since it uses less digits than its factorization.

998128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62391 (or 62385 counting only the distinct ones).

The product of its digits is 10368, while the sum is 37.

The square root of 998128 is about 999.0635615415. The cubic root of 998128 is about 99.9375610219.

The spelling of 998128 in words is "nine hundred ninety-eight thousand, one hundred twenty-eight".