199473280 has 32 divisors (see below), whose sum is σ = 476867340. Its totient is φ = 79789056.

The previous prime is 199473269. The next prime is 199473289. The reversal of 199473280 is 82374991.

199473280 is digitally balanced in base 3, 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 2 ways, for example, as 191767104 + 7706176 = 13848^2 + 2776^2 .

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 (199473289) 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, 155199 + ... + 156478.

Almost surely, 2^199473280 is an apocalyptic number.

199473280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199473280 is an abundant number, since it is smaller than the sum of its proper divisors (277394060).

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

199473280 is an equidigital number, since it uses as much as digits as its factorization.

199473280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311696 (or 311684 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 199473280 is about 14123.5009824052. The cubic root of 199473280 is about 584.2897167622.

The spelling of 199473280 in words is "one hundred ninety-nine million, four hundred seventy-three thousand, two hundred eighty".