198400022 has 8 divisors (see below), whose sum is σ = 304521096. Its totient is φ = 96892992.

The previous prime is 198400021. The next prime is 198400061. The reversal of 198400022 is 220004891.

198400022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 198399964 and 198400000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198400021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153403 + ... + 1153574.

It is an arithmetic number, because the mean of its divisors is an integer number (38065137).

Almost surely, 2^198400022 is an apocalyptic number.

198400022 is a deficient number, since it is larger than the sum of its proper divisors (106121074).

198400022 is a wasteful number, since it uses less digits than its factorization.

198400022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307022.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 198400022 is about 14085.4542702747. The cubic root of 198400022 is about 583.2399158886.

The spelling of 198400022 in words is "one hundred ninety-eight million, four hundred thousand, twenty-two".