198474220 has 48 divisors (see below), whose sum is σ = 477888768. Its totient is φ = 67826880.

The previous prime is 198474169. The next prime is 198474223. The reversal of 198474220 is 22474891.

It is a self number, because there is not a number n which added to its sum of digits gives 198474220.

It is not an unprimeable number, because it can be changed into a prime (198474223) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 44199 + ... + 48481.

It is an arithmetic number, because the mean of its divisors is an integer number (9956016).

Almost surely, 2^198474220 is an apocalyptic number.

198474220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198474220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238944384).

198474220 is an abundant number, since it is smaller than the sum of its proper divisors (279414548).

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

198474220 is a wasteful number, since it uses less digits than its factorization.

198474220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630 (or 4628 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 198474220 is about 14088.0878759326. The cubic root of 198474220 is about 583.3126138672.

The spelling of 198474220 in words is "one hundred ninety-eight million, four hundred seventy-four thousand, two hundred twenty".