199252720 has 20 divisors (see below), whose sum is σ = 463262760. Its totient is φ = 79701056.

The previous prime is 199252709. The next prime is 199252721. The reversal of 199252720 is 27252991.

199252720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 199252720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199252721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245250 + ... + 1245409.

It is an arithmetic number, because the mean of its divisors is an integer number (23163138).

Almost surely, 2^199252720 is an apocalyptic number.

199252720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199252720 is an abundant number, since it is smaller than the sum of its proper divisors (264010040).

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

199252720 is a wasteful number, since it uses less digits than its factorization.

199252720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490672 (or 2490666 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 199252720 is about 14115.6905605075. The cubic root of 199252720 is about 584.0742852899.

The spelling of 199252720 in words is "one hundred ninety-nine million, two hundred fifty-two thousand, seven hundred twenty".