998839628 has 12 divisors (see below), whose sum is σ = 1748481000. Its totient is φ = 499273632.

The previous prime is 998839603. The next prime is 998839649. The reversal of 998839628 is 826938899.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20378 + ... + 49121.

It is an arithmetic number, because the mean of its divisors is an integer number (145706750).

Almost surely, 2^998839628 is an apocalyptic number.

It is an amenable number.

998839628 is a deficient number, since it is larger than the sum of its proper divisors (749641372).

998839628 is a wasteful number, since it uses less digits than its factorization.

998839628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73096 (or 73094 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 62.

The square root of 998839628 is about 31604.4241839651. The cubic root of 998839628 is about 999.6130596298.

The spelling of 998839628 in words is "nine hundred ninety-eight million, eight hundred thirty-nine thousand, six hundred twenty-eight".