198947228 has 6 divisors (see below), whose sum is σ = 348157656. Its totient is φ = 99473612.

The previous prime is 198947207. The next prime is 198947237. The reversal of 198947228 is 822749891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24868400 + ... + 24868407.

It is an arithmetic number, because the mean of its divisors is an integer number (58026276).

Almost surely, 2^198947228 is an apocalyptic number.

It is an amenable number.

198947228 is a deficient number, since it is larger than the sum of its proper divisors (149210428).

198947228 is a wasteful number, since it uses less digits than its factorization.

198947228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49736811 (or 49736809 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 198947228 is about 14104.8654016974. The cubic root of 198947228 is about 583.7756339285.

The spelling of 198947228 in words is "one hundred ninety-eight million, nine hundred forty-seven thousand, two hundred twenty-eight".