198428950 has 24 divisors (see below), whose sum is σ = 370436112. Its totient is φ = 79079520.

The previous prime is 198428939. The next prime is 198428957. The reversal of 198428950 is 59824891.

It is a self number, because there is not a number n which added to its sum of digits gives 198428950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198428957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6687 + ... + 21013.

It is an arithmetic number, because the mean of its divisors is an integer number (15434838).

Almost surely, 2^198428950 is an apocalyptic number.

198428950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198428950 is a deficient number, since it is larger than the sum of its proper divisors (172007162).

198428950 is a wasteful number, since it uses less digits than its factorization.

198428950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14616 (or 14611 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 198428950 is about 14086.4811077856. The cubic root of 198428950 is about 583.2682612221.

The spelling of 198428950 in words is "one hundred ninety-eight million, four hundred twenty-eight thousand, nine hundred fifty".