198843040 has 48 divisors (see below), whose sum is σ = 512477280. Its totient is φ = 72305920.

The previous prime is 198843013. The next prime is 198843061. The reversal of 198843040 is 40348891.

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 7 ways as a sum of consecutive naturals, for example, 54730 + ... + 58249.

It is an arithmetic number, because the mean of its divisors is an integer number (10676610).

Almost surely, 2^198843040 is an apocalyptic number.

198843040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198843040 is an abundant number, since it is smaller than the sum of its proper divisors (313634240).

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

198843040 is a wasteful number, since it uses less digits than its factorization.

198843040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113005 (or 112997 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 198843040 is about 14101.1715825317. The cubic root of 198843040 is about 583.6737090162.

The spelling of 198843040 in words is "one hundred ninety-eight million, eight hundred forty-three thousand, forty".