198266860 has 24 divisors (see below), whose sum is σ = 454211856. Its totient is φ = 72096960.

The previous prime is 198266833. The next prime is 198266867. The reversal of 198266860 is 68662891.

It is a self number, because there is not a number n which added to its sum of digits gives 198266860.

It is not an unprimeable number, because it can be changed into a prime (198266867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450387 + ... + 450826.

It is an arithmetic number, because the mean of its divisors is an integer number (18925494).

Almost surely, 2^198266860 is an apocalyptic number.

198266860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198266860 is an abundant number, since it is smaller than the sum of its proper divisors (255944996).

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

198266860 is a wasteful number, since it uses less digits than its factorization.

198266860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901233 (or 901231 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 198266860 is about 14080.7265437548. The cubic root of 198266860 is about 583.1094004865.

The spelling of 198266860 in words is "one hundred ninety-eight million, two hundred sixty-six thousand, eight hundred sixty".