198825580 has 24 divisors (see below), whose sum is σ = 418375440. Its totient is φ = 79369920.

The previous prime is 198825577. The next prime is 198825617. The reversal of 198825580 is 85528891.

It is a super-2 number, since 2×198825580² = 79063222524672800, 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 198825580.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415 + ... + 19945.

It is an arithmetic number, because the mean of its divisors is an integer number (17432310).

Almost surely, 2^198825580 is an apocalyptic number.

198825580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198825580 is an abundant number, since it is smaller than the sum of its proper divisors (219549860).

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

198825580 is a wasteful number, since it uses less digits than its factorization.

198825580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20049 (or 20047 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 46.

The square root of 198825580 is about 14100.5524714459. The cubic root of 198825580 is about 583.6566247852.

The spelling of 198825580 in words is "one hundred ninety-eight million, eight hundred twenty-five thousand, five hundred eighty".