198345750 has 128 divisors (see below), whose sum is σ = 539136000. Its totient is φ = 48384000.

The previous prime is 198345743. The next prime is 198345751. The reversal of 198345750 is 57543891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198345751) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 441526 + ... + 441974.

It is an arithmetic number, because the mean of its divisors is an integer number (4212000).

Almost surely, 2^198345750 is an apocalyptic number.

198345750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 198345750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269568000).

198345750 is an abundant number, since it is smaller than the sum of its proper divisors (340790250).

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

198345750 is a wasteful number, since it uses less digits than its factorization.

198345750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 198345750 is about 14083.5276120722. The cubic root of 198345750 is about 583.1867295984.

The spelling of 198345750 in words is "one hundred ninety-eight million, three hundred forty-five thousand, seven hundred fifty".