198432828 has 144 divisors (see below), whose sum is σ = 578008704. Its totient is φ = 59019840.

The previous prime is 198432821. The next prime is 198432853. The reversal of 198432828 is 828234891.

198432828 is a `hidden beast` number, since 198 + 432 + 8 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198432821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 716226 + ... + 716502.

Almost surely, 2^198432828 is an apocalyptic number.

198432828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198432828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289004352).

198432828 is an abundant number, since it is smaller than the sum of its proper divisors (379575876).

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

198432828 is a wasteful number, since it uses less digits than its factorization.

198432828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 360 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 198432828 is about 14086.6187568202. The cubic root of 198432828 is about 583.2720609021.

The spelling of 198432828 in words is "one hundred ninety-eight million, four hundred thirty-two thousand, eight hundred twenty-eight".