198761028 has 12 divisors (see below), whose sum is σ = 463775760. Its totient is φ = 66253672.

The previous prime is 198760999. The next prime is 198761047. The reversal of 198761028 is 820167891.

198761028 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 8281698 + ... + 8281721.

It is an arithmetic number, because the mean of its divisors is an integer number (38647980).

Almost surely, 2^198761028 is an apocalyptic number.

It is an amenable number.

198761028 is an abundant number, since it is smaller than the sum of its proper divisors (265014732).

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

198761028 is a wasteful number, since it uses less digits than its factorization.

198761028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16563426 (or 16563424 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 198761028 is about 14098.2632973001. The cubic root of 198761028 is about 583.5934533687.

The spelling of 198761028 in words is "one hundred ninety-eight million, seven hundred sixty-one thousand, twenty-eight".