198880308 has 72 divisors (see below), whose sum is σ = 550761120. Its totient is φ = 60010560.

The previous prime is 198880307. The next prime is 198880309. The reversal of 198880308 is 803088891.

It is an interprime number because it is at equal distance from previous prime (198880307) and next prime (198880309).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198880303) 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, 105591 + ... + 107457.

It is an arithmetic number, because the mean of its divisors is an integer number (7649460).

Almost surely, 2^198880308 is an apocalyptic number.

198880308 is a gapful number since it is divisible by the number (18) 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 198880308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275380560).

198880308 is an abundant number, since it is smaller than the sum of its proper divisors (351880812).

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

198880308 is a wasteful number, since it uses less digits than its factorization.

198880308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 198880308 is about 14102.4929711027. The cubic root of 198880308 is about 583.7101715998.

The spelling of 198880308 in words is "one hundred ninety-eight million, eight hundred eighty thousand, three hundred eight".