198097428 has 48 divisors (see below), whose sum is σ = 472582656. Its totient is φ = 64570080.

The previous prime is 198097373. The next prime is 198097451. The reversal of 198097428 is 824790891.

It is a congruent 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, 101623 + ... + 103553.

It is an arithmetic number, because the mean of its divisors is an integer number (9845472).

Almost surely, 2^198097428 is an apocalyptic number.

It is an amenable number.

198097428 is an abundant number, since it is smaller than the sum of its proper divisors (274485228).

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

198097428 is a wasteful number, since it uses less digits than its factorization.

198097428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124 (or 2122 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 198097428 is about 14074.7088069345. The cubic root of 198097428 is about 582.9432514416.

The spelling of 198097428 in words is "one hundred ninety-eight million, ninety-seven thousand, four hundred twenty-eight".