198491048 has 32 divisors (see below), whose sum is σ = 450360000. Its totient is φ = 80063232.

The previous prime is 198491021. The next prime is 198491057. The reversal of 198491048 is 840194891.

It is a super-2 number, since 2×198491048² = 78797392272276608, which contains 22 as substring.

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, 103298 + ... + 105201.

It is an arithmetic number, because the mean of its divisors is an integer number (14073750).

Almost surely, 2^198491048 is an apocalyptic number.

It is an amenable number.

198491048 is an abundant number, since it is smaller than the sum of its proper divisors (251868952).

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

198491048 is a wasteful number, since it uses less digits than its factorization.

198491048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208529 (or 208525 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 198491048 is about 14088.6851054312. The cubic root of 198491048 is about 583.3290991439.

The spelling of 198491048 in words is "one hundred ninety-eight million, four hundred ninety-one thousand, forty-eight".