198689072 has 10 divisors (see below), whose sum is σ = 384960108. Its totient is φ = 99344528.

The previous prime is 198689011. The next prime is 198689089. The reversal of 198689072 is 270986891.

198689072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×198689072⁴ (a number of 34 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198689072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6209018 + ... + 6209049.

Almost surely, 2^198689072 is an apocalyptic number.

It is an amenable number.

198689072 is a deficient number, since it is larger than the sum of its proper divisors (186271036).

198689072 is a wasteful number, since it uses less digits than its factorization.

198689072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12418075 (or 12418069 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 198689072 is about 14095.7111207629. The cubic root of 198689072 is about 583.5230201799.

The spelling of 198689072 in words is "one hundred ninety-eight million, six hundred eighty-nine thousand, seventy-two".