199247020 has 24 divisors (see below), whose sum is σ = 478193184. Its totient is φ = 68313216.

The previous prime is 199247017. The next prime is 199247029. The reversal of 199247020 is 20742991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (199247029) 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, 711457 + ... + 711736.

It is an arithmetic number, because the mean of its divisors is an integer number (19924716).

Almost surely, 2^199247020 is an apocalyptic number.

199247020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199247020 is an abundant number, since it is smaller than the sum of its proper divisors (278946164).

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

199247020 is a wasteful number, since it uses less digits than its factorization.

199247020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423209 (or 1423207 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 199247020 is about 14115.4886560827. The cubic root of 199247020 is about 584.0687157212.

The spelling of 199247020 in words is "one hundred ninety-nine million, two hundred forty-seven thousand, twenty".