198278088 has 64 divisors (see below), whose sum is σ = 510572160. Its totient is φ = 64137216.

The previous prime is 198278083. The next prime is 198278159. The reversal of 198278088 is 880872891.

It is a happy number.

It is a super-3 number, since 3×198278088³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198278088.

It is not an unprimeable number, because it can be changed into a prime (198278083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122581 + ... + 124187.

It is an arithmetic number, because the mean of its divisors is an integer number (7977690).

Almost surely, 2^198278088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198278088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255286080).

198278088 is an abundant number, since it is smaller than the sum of its proper divisors (312294072).

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

198278088 is a wasteful number, since it uses less digits than its factorization.

198278088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1762 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 51.

The square root of 198278088 is about 14081.1252391277. The cubic root of 198278088 is about 583.1204075853.

The spelling of 198278088 in words is "one hundred ninety-eight million, two hundred seventy-eight thousand, eighty-eight".