199680420 has 24 divisors (see below), whose sum is σ = 559105344. Its totient is φ = 53248096.

The previous prime is 199680409. The next prime is 199680427. The reversal of 199680420 is 24086991.

It is not an unprimeable number, because it can be changed into a prime (199680427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1663944 + ... + 1664063.

It is an arithmetic number, because the mean of its divisors is an integer number (23296056).

Almost surely, 2^199680420 is an apocalyptic number.

199680420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199680420 is an abundant number, since it is smaller than the sum of its proper divisors (359424924).

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

199680420 is a wasteful number, since it uses less digits than its factorization.

199680420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328019 (or 3328017 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 199680420 is about 14130.8322472528. The cubic root of 199680420 is about 584.4918957245.

The spelling of 199680420 in words is "one hundred ninety-nine million, six hundred eighty thousand, four hundred twenty".