198474880 has 32 divisors (see below), whose sum is σ = 474480540. Its totient is φ = 79389696.

The previous prime is 198474863. The next prime is 198474883. The reversal of 198474880 is 88474891.

It can be written as a sum of positive squares in 2 ways, for example, as 198471744 + 3136 = 14088^2 + 56^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (198474883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154419 + ... + 155698.

Almost surely, 2^198474880 is an apocalyptic number.

198474880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198474880 is an abundant number, since it is smaller than the sum of its proper divisors (276005660).

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

198474880 is an equidigital number, since it uses as much as digits as its factorization.

198474880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310136 (or 310124 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The square root of 198474880 is about 14088.1112999578. Note that the first 3 decimals coincide. The cubic root of 198474880 is about 583.3132604431.

The spelling of 198474880 in words is "one hundred ninety-eight million, four hundred seventy-four thousand, eight hundred eighty".