198743428 has 48 divisors (see below), whose sum is σ = 392137200. Its totient is φ = 87519744.

The previous prime is 198743411. The next prime is 198743459. The reversal of 198743428 is 824347891.

It can be written as a sum of positive squares in 8 ways, for example, as 18593344 + 180150084 = 4312^2 + 13422^2 .

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 15 ways as a sum of consecutive naturals, for example, 100998 + ... + 102946.

It is an arithmetic number, because the mean of its divisors is an integer number (8169525).

Almost surely, 2^198743428 is an apocalyptic number.

It is an amenable number.

198743428 is a deficient number, since it is larger than the sum of its proper divisors (193393772).

198743428 is a wasteful number, since it uses less digits than its factorization.

198743428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056 (or 2054 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 198743428 is about 14097.6390931248. The cubic root of 198743428 is about 583.5762274097.

The spelling of 198743428 in words is "one hundred ninety-eight million, seven hundred forty-three thousand, four hundred twenty-eight".