198020022 has 16 divisors (see below), whose sum is σ = 396249840. Its totient is φ = 65971712.

The previous prime is 198020021. The next prime is 198020023. The reversal of 198020022 is 220020891.

It is an interprime number because it is at equal distance from previous prime (198020021) and next prime (198020023).

It is a super-2 number, since 2×198020022² = 78423858225760968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198019974 and 198020001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198020021) 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 7 ways as a sum of consecutive naturals, for example, 5254 + ... + 20582.

It is an arithmetic number, because the mean of its divisors is an integer number (24765615).

Almost surely, 2^198020022 is an apocalyptic number.

198020022 is an abundant number, since it is smaller than the sum of its proper divisors (198229818).

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

198020022 is a wasteful number, since it uses less digits than its factorization.

198020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17487.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 198020022 is about 14071.9587122760. The cubic root of 198020022 is about 582.8673137505.

The spelling of 198020022 in words is "one hundred ninety-eight million, twenty thousand, twenty-two".