198542220 has 24 divisors (see below), whose sum is σ = 555918384. Its totient is φ = 52944576.

The previous prime is 198542209. The next prime is 198542237. The reversal of 198542220 is 22245891.

198542220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1654459 + ... + 1654578.

It is an arithmetic number, because the mean of its divisors is an integer number (23163266).

Almost surely, 2^198542220 is an apocalyptic number.

198542220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198542220 is an abundant number, since it is smaller than the sum of its proper divisors (357376164).

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

198542220 is a wasteful number, since it uses less digits than its factorization.

198542220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309049 (or 3309047 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 198542220 is about 14090.5010556758. The cubic root of 198542220 is about 583.3792232379.

The spelling of 198542220 in words is "one hundred ninety-eight million, five hundred forty-two thousand, two hundred twenty".