198226490 has 32 divisors (see below), whose sum is σ = 444852864. Its totient is φ = 61784640.

The previous prime is 198226459. The next prime is 198226507. The reversal of 198226490 is 94622891.

198226490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127949 + ... + 129488.

It is an arithmetic number, because the mean of its divisors is an integer number (13901652).

Almost surely, 2^198226490 is an apocalyptic number.

198226490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198226490 is an abundant number, since it is smaller than the sum of its proper divisors (246626374).

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

198226490 is a wasteful number, since it uses less digits than its factorization.

198226490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257462.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 198226490 is about 14079.2929509972. The cubic root of 198226490 is about 583.0698212978.

The spelling of 198226490 in words is "one hundred ninety-eight million, two hundred twenty-six thousand, four hundred ninety".