198938880 has 216 divisors, whose sum is σ = 786956352. Its totient is φ = 45453312.

The previous prime is 198938867. The next prime is 198938881. The reversal of 198938880 is 88839891.

It is not an unprimeable number, because it can be changed into a prime (198938881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79407 + ... + 81873.

Almost surely, 2^198938880 is an apocalyptic number.

198938880 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 198938880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393478176).

198938880 is an abundant number, since it is smaller than the sum of its proper divisors (588017472).

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

198938880 is a wasteful number, since it uses less digits than its factorization.

198938880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501 (or 2484 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The square root of 198938880 is about 14104.5694723377. The cubic root of 198938880 is about 583.7674685686.

The spelling of 198938880 in words is "one hundred ninety-eight million, nine hundred thirty-eight thousand, eight hundred eighty".