198588240 has 80 divisors (see below), whose sum is σ = 684033600. Its totient is φ = 52956288.

The previous prime is 198588211. The next prime is 198588253. The reversal of 198588240 is 42885891.

It is a happy number.

198588240 is digitally balanced in base 3, because in such base 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 (80).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43810 + ... + 48129.

It is an arithmetic number, because the mean of its divisors is an integer number (8550420).

Almost surely, 2^198588240 is an apocalyptic number.

198588240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198588240 is an abundant number, since it is smaller than the sum of its proper divisors (485445360).

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

198588240 is a wasteful number, since it uses less digits than its factorization.

198588240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91961 (or 91949 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 198588240 is about 14092.1339760875. The cubic root of 198588240 is about 583.4242934801.

The spelling of 198588240 in words is "one hundred ninety-eight million, five hundred eighty-eight thousand, two hundred forty".