198982770 has 64 divisors (see below), whose sum is σ = 550851840. Its totient is φ = 45059328.

The previous prime is 198982733. The next prime is 198982783. The reversal of 198982770 is 77289891.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18544 + ... + 27236.

It is an arithmetic number, because the mean of its divisors is an integer number (8607060).

Almost surely, 2^198982770 is an apocalyptic number.

198982770 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 198982770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275425920).

198982770 is an abundant number, since it is smaller than the sum of its proper divisors (351869070).

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

198982770 is a wasteful number, since it uses less digits than its factorization.

198982770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8819.

The product of its (nonzero) digits is 508032, while the sum is 51.

The square root of 198982770 is about 14106.1252652881. The cubic root of 198982770 is about 583.8103957736.

The spelling of 198982770 in words is "one hundred ninety-eight million, nine hundred eighty-two thousand, seven hundred seventy".