199802620 has 12 divisors (see below), whose sum is σ = 419585544. Its totient is φ = 79921040.

The previous prime is 199802599. The next prime is 199802621. The reversal of 199802620 is 26208991.

It is a self number, because there is not a number n which added to its sum of digits gives 199802620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199802621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4995046 + ... + 4995085.

It is an arithmetic number, because the mean of its divisors is an integer number (34965462).

Almost surely, 2^199802620 is an apocalyptic number.

199802620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199802620 is an abundant number, since it is smaller than the sum of its proper divisors (219782924).

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

199802620 is a wasteful number, since it uses less digits than its factorization.

199802620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9990140 (or 9990138 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 199802620 is about 14135.1554643025. The cubic root of 199802620 is about 584.6111034472.

The spelling of 199802620 in words is "one hundred ninety-nine million, eight hundred two thousand, six hundred twenty".