198045828 has 18 divisors (see below), whose sum is σ = 500615934. Its totient is φ = 66015264.

The previous prime is 198045823. The next prime is 198045829. The reversal of 198045828 is 828540891.

It is a happy number.

198045828 is a `hidden beast` number, since 198 + 0 + 458 + 2 + 8 = 666.

198045828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 178703424 + 19342404 = 13368^2 + 4398^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (198045823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2750601 + ... + 2750672.

Almost surely, 2^198045828 is an apocalyptic number.

198045828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

198045828 is an abundant number, since it is smaller than the sum of its proper divisors (302570106).

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

198045828 is a wasteful number, since it uses less digits than its factorization.

198045828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5501283 (or 5501278 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 198045828 is about 14072.8756123260. The cubic root of 198045828 is about 582.8926324370.

The spelling of 198045828 in words is "one hundred ninety-eight million, forty-five thousand, eight hundred twenty-eight".