199845280 has 24 divisors (see below), whose sum is σ = 472134852. Its totient is φ = 79938048.

The previous prime is 199845263. The next prime is 199845299. The reversal of 199845280 is 82548991.

199845280 is digitally balanced in base 2, 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 179667216 + 20178064 = 13404^2 + 4492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 199845280.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624357 + ... + 624676.

Almost surely, 2^199845280 is an apocalyptic number.

199845280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199845280 is an abundant number, since it is smaller than the sum of its proper divisors (272289572).

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

199845280 is a wasteful number, since it uses less digits than its factorization.

199845280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249048 (or 1249040 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 199845280 is about 14136.6643873298. The cubic root of 199845280 is about 584.6527073977.

It can be divided in two parts, 1998 and 45280, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 199845280 in words is "one hundred ninety-nine million, eight hundred forty-five thousand, two hundred eighty".