198697472 has 20 divisors (see below), whose sum is σ = 397007886. Its totient is φ = 99348480.

The previous prime is 198697463. The next prime is 198697519. The reversal of 198697472 is 274796891.

It can be written as a sum of positive squares in only one way, i.e., 198697216 + 256 = 14096^2 + 16^2 .

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 as a sum of consecutive naturals, namely, 193529 + ... + 194552.

Almost surely, 2^198697472 is an apocalyptic number.

It is an amenable number.

198697472 is a deficient number, since it is larger than the sum of its proper divisors (198310414).

198697472 is an frugal number, since it uses more digits than its factorization.

198697472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388099 (or 388083 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 53.

The square root of 198697472 is about 14096.0090805873. The cubic root of 198697472 is about 583.5312432866.

The spelling of 198697472 in words is "one hundred ninety-eight million, six hundred ninety-seven thousand, four hundred seventy-two".