198179828 has 48 divisors (see below), whose sum is σ = 436660224. Its totient is φ = 76451040.

The previous prime is 198179809. The next prime is 198179857. The reversal of 198179828 is 828971891.

It is a happy number.

It is a super-2 number, since 2×198179828² = 78550488452219168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198179828.

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, 28601 + ... + 34847.

It is an arithmetic number, because the mean of its divisors is an integer number (9097088).

Almost surely, 2^198179828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198179828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218330112).

198179828 is an abundant number, since it is smaller than the sum of its proper divisors (238480396).

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

198179828 is a wasteful number, since it uses less digits than its factorization.

198179828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6372 (or 6370 counting only the distinct ones).

The product of its digits is 580608, while the sum is 53.

The square root of 198179828 is about 14077.6357390011. The cubic root of 198179828 is about 583.0240666678.

The spelling of 198179828 in words is "one hundred ninety-eight million, one hundred seventy-nine thousand, eight hundred twenty-eight".