198928144 has 10 divisors (see below), whose sum is σ = 385423310. Its totient is φ = 99464064.

The previous prime is 198928141. The next prime is 198928151. The reversal of 198928144 is 441829891.

It can be written as a sum of positive squares in only one way, i.e., 192876544 + 6051600 = 13888^2 + 2460^2 .

It is a junction number, because it is equal to n+sod(n) for n = 198928094 and 198928103.

It is not an unprimeable number, because it can be changed into a prime (198928141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6216489 + ... + 6216520.

It is an arithmetic number, because the mean of its divisors is an integer number (38542331).

Almost surely, 2^198928144 is an apocalyptic number.

It is an amenable number.

198928144 is a deficient number, since it is larger than the sum of its proper divisors (186495166).

198928144 is a wasteful number, since it uses less digits than its factorization.

198928144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12433017 (or 12433011 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The square root of 198928144 is about 14104.1888813217. The cubic root of 198928144 is about 583.7569671183.

The spelling of 198928144 in words is "one hundred ninety-eight million, nine hundred twenty-eight thousand, one hundred forty-four".