289720198 has 16 divisors (see below), whose sum is σ = 437477040. Its totient is φ = 143898336.

The previous prime is 289720181. The next prime is 289720199. The reversal of 289720198 is 891027982.

289720198 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289720199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238240 + ... + 239452.

It is an arithmetic number, because the mean of its divisors is an integer number (27342315).

Almost surely, 2^289720198 is an apocalyptic number.

289720198 is a deficient number, since it is larger than the sum of its proper divisors (147756842).

289720198 is a wasteful number, since it uses less digits than its factorization.

289720198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 289720198 is about 17021.1691137830. The cubic root of 289720198 is about 661.6976482464.

The spelling of 289720198 in words is "two hundred eighty-nine million, seven hundred twenty thousand, one hundred ninety-eight".