198889672 has 8 divisors (see below), whose sum is σ = 372918150. Its totient is φ = 99444832.

The previous prime is 198889667. The next prime is 198889697. The reversal of 198889672 is 276988891.

198889672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 184036356 + 14853316 = 13566^2 + 3854^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12430597 + ... + 12430612.

Almost surely, 2^198889672 is an apocalyptic number.

It is an amenable number.

198889672 is a deficient number, since it is larger than the sum of its proper divisors (174028478).

198889672 is a wasteful number, since it uses less digits than its factorization.

198889672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24861215 (or 24861211 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 58.

The square root of 198889672 is about 14102.8249652330. The cubic root of 198889672 is about 583.7193325140.

The spelling of 198889672 in words is "one hundred ninety-eight million, eight hundred eighty-nine thousand, six hundred seventy-two".