198857360 has 80 divisors (see below), whose sum is σ = 502842816. Its totient is φ = 72697344.

The previous prime is 198857359. The next prime is 198857371. The reversal of 198857360 is 63758891.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110387 + ... + 112173.

Almost surely, 2^198857360 is an apocalyptic number.

198857360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198857360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251421408).

198857360 is an abundant number, since it is smaller than the sum of its proper divisors (303985456).

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

198857360 is a wasteful number, since it uses less digits than its factorization.

198857360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 198857360 is about 14101.6793326185. The cubic root of 198857360 is about 583.6877200788.

The spelling of 198857360 in words is "one hundred ninety-eight million, eight hundred fifty-seven thousand, three hundred sixty".