198452840 has 16 divisors (see below), whose sum is σ = 446518980. Its totient is φ = 79381120.

The previous prime is 198452831. The next prime is 198452923. The reversal of 198452840 is 48254891.

It can be written as a sum of positive squares in 2 ways, for example, as 178436164 + 20016676 = 13358^2 + 4474^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2480621 + ... + 2480700.

Almost surely, 2^198452840 is an apocalyptic number.

198452840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198452840 is an abundant number, since it is smaller than the sum of its proper divisors (248066140).

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

198452840 is a wasteful number, since it uses less digits than its factorization.

198452840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961332 (or 4961328 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 198452840 is about 14087.3290584127. The cubic root of 198452840 is about 583.2916679538.

The spelling of 198452840 in words is "one hundred ninety-eight million, four hundred fifty-two thousand, eight hundred forty".