198404650 has 48 divisors (see below), whose sum is σ = 401045760. Its totient is φ = 72748800.

The previous prime is 198404561. The next prime is 198404651. The reversal of 198404650 is 56404891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198404651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26082 + ... + 32818.

It is an arithmetic number, because the mean of its divisors is an integer number (8355120).

Almost surely, 2^198404650 is an apocalyptic number.

198404650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198404650 is an abundant number, since it is smaller than the sum of its proper divisors (202641110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198404650 is a wasteful number, since it uses less digits than its factorization.

198404650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6799 (or 6794 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 198404650 is about 14085.6185522681. The cubic root of 198404650 is about 583.2444508568.

The spelling of 198404650 in words is "one hundred ninety-eight million, four hundred four thousand, six hundred fifty".