198873900 has 144 divisors (see below), whose sum is σ = 648743200. Its totient is φ = 52254720.

The previous prime is 198873887. The next prime is 198873901. The reversal of 198873900 is 9378891.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198873901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196596 + ... + 197604.

Almost surely, 2^198873900 is an apocalyptic number.

198873900 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 198873900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324371600).

198873900 is an abundant number, since it is smaller than the sum of its proper divisors (449869300).

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

198873900 is a wasteful number, since it uses less digits than its factorization.

198873900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 198873900 is about 14102.2657753994. The cubic root of 198873900 is about 583.7039024104.

The spelling of 198873900 in words is "one hundred ninety-eight million, eight hundred seventy-three thousand, nine hundred".