198221926 has 8 divisors (see below), whose sum is σ = 339809040. Its totient is φ = 84952248.

The previous prime is 198221911. The next prime is 198221929. The reversal of 198221926 is 629122891.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198221929) 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, 7079341 + ... + 7079368.

It is an arithmetic number, because the mean of its divisors is an integer number (42476130).

Almost surely, 2^198221926 is an apocalyptic number.

198221926 is a deficient number, since it is larger than the sum of its proper divisors (141587114).

198221926 is a wasteful number, since it uses less digits than its factorization.

198221926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14158718.

The product of its digits is 31104, while the sum is 40.

The square root of 198221926 is about 14079.1308680614. The cubic root of 198221926 is about 583.0653463643.

The spelling of 198221926 in words is "one hundred ninety-eight million, two hundred twenty-one thousand, nine hundred twenty-six".