198428648 has 16 divisors (see below), whose sum is σ = 405876960. Its totient is φ = 90194800.

The previous prime is 198428627. The next prime is 198428687. The reversal of 198428648 is 846824891.

It is a junction number, because it is equal to n+sod(n) for n = 198428596 and 198428605.

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 3 ways as a sum of consecutive naturals, for example, 1127348 + ... + 1127523.

It is an arithmetic number, because the mean of its divisors is an integer number (25367310).

Almost surely, 2^198428648 is an apocalyptic number.

It is an amenable number.

198428648 is an abundant number, since it is smaller than the sum of its proper divisors (207448312).

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

198428648 is a wasteful number, since it uses less digits than its factorization.

198428648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254888 (or 2254884 counting only the distinct ones).

The product of its digits is 884736, while the sum is 50.

The square root of 198428648 is about 14086.4703882839. The cubic root of 198428648 is about 583.2679653192.

The spelling of 198428648 in words is "one hundred ninety-eight million, four hundred twenty-eight thousand, six hundred forty-eight".