198982764 has 96 divisors (see below), whose sum is σ = 530530560. Its totient is φ = 64475136.

The previous prime is 198982733. The next prime is 198982783. The reversal of 198982764 is 467289891.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 198982764.

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, 774124 + ... + 774380.

It is an arithmetic number, because the mean of its divisors is an integer number (5526360).

Almost surely, 2^198982764 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 198982764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265265280).

198982764 is an abundant number, since it is smaller than the sum of its proper divisors (331547796).

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

198982764 is a wasteful number, since it uses less digits than its factorization.

198982764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 436 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 198982764 is about 14106.1250526146. The cubic root of 198982764 is about 583.8103899056.

It can be divided in two parts, 1989827 and 64, that added together give a palindrome (1989891).

The spelling of 198982764 in words is "one hundred ninety-eight million, nine hundred eighty-two thousand, seven hundred sixty-four".