199259928 has 96 divisors (see below), whose sum is σ = 638071200. Its totient is φ = 54964224.

The previous prime is 199259917. The next prime is 199259939. The reversal of 199259928 is 829952991.

199259928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (199259917) and next prime (199259939).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7800 + ... + 21432.

It is an arithmetic number, because the mean of its divisors is an integer number (6646575).

Almost surely, 2^199259928 is an apocalyptic number.

199259928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199259928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319035600).

199259928 is an abundant number, since it is smaller than the sum of its proper divisors (438811272).

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

199259928 is a wasteful number, since it uses less digits than its factorization.

199259928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13681 (or 13674 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 199259928 is about 14115.9458769152. The cubic root of 199259928 is about 584.0813281995.

The spelling of 199259928 in words is "one hundred ninety-nine million, two hundred fifty-nine thousand, nine hundred twenty-eight".