198775500 has 192 divisors, whose sum is σ = 722082816. Its totient is φ = 41280000.

The previous prime is 198775469. The next prime is 198775513. The reversal of 198775500 is 5577891.

198775500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114640 + ... + 116360.

It is an arithmetic number, because the mean of its divisors is an integer number (3760848).

Almost surely, 2^198775500 is an apocalyptic number.

198775500 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 198775500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361041408).

198775500 is an abundant number, since it is smaller than the sum of its proper divisors (523307316).

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

198775500 is a wasteful number, since it uses less digits than its factorization.

198775500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761 (or 1749 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 42.

The square root of 198775500 is about 14098.7765426650. The cubic root of 198775500 is about 583.6076170432.

The spelling of 198775500 in words is "one hundred ninety-eight million, seven hundred seventy-five thousand, five hundred".