198705000 has 160 divisors (see below), whose sum is σ = 669160800. Its totient is φ = 48864000.

The previous prime is 198704969. The next prime is 198705011. The reversal of 198705000 is 507891.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 194491 + ... + 195509.

It is an arithmetic number, because the mean of its divisors is an integer number (4182255).

Almost surely, 2^198705000 is an apocalyptic number.

198705000 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 198705000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334580400).

198705000 is an abundant number, since it is smaller than the sum of its proper divisors (470455800).

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

198705000 is a wasteful number, since it uses less digits than its factorization.

198705000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 198705000 is about 14096.2761039929. The cubic root of 198705000 is about 583.5386125595.

The spelling of 198705000 in words is "one hundred ninety-eight million, seven hundred five thousand".