199082820 has 48 divisors (see below), whose sum is σ = 559012608. Its totient is φ = 52938240.

The previous prime is 199082813. The next prime is 199082827. The reversal of 199082820 is 28280991.

It is an interprime number because it is at equal distance from previous prime (199082813) and next prime (199082827).

It is not an unprimeable number, because it can be changed into a prime (199082827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17500 + ... + 26540.

It is an arithmetic number, because the mean of its divisors is an integer number (11646096).

Almost surely, 2^199082820 is an apocalyptic number.

199082820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199082820 is an abundant number, since it is smaller than the sum of its proper divisors (359929788).

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

199082820 is a wasteful number, since it uses less digits than its factorization.

199082820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9420 (or 9418 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 199082820 is about 14109.6711513770. The cubic root of 199082820 is about 583.9082274319.

The spelling of 199082820 in words is "one hundred ninety-nine million, eighty-two thousand, eight hundred twenty".