199996758 has 48 divisors (see below), whose sum is σ = 467734176. Its totient is φ = 61395840.

The previous prime is 199996757. The next prime is 199996759. The reversal of 199996758 is 857699991.

It is an interprime number because it is at equal distance from previous prime (199996757) and next prime (199996759).

It is a junction number, because it is equal to n+sod(n) for n = 199996695 and 199996704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199996757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150738 + ... + 152058.

It is an arithmetic number, because the mean of its divisors is an integer number (9744462).

Almost surely, 2^199996758 is an apocalyptic number.

199996758 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

199996758 is an abundant number, since it is smaller than the sum of its proper divisors (267737418).

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

199996758 is a wasteful number, since it uses less digits than its factorization.

199996758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989 (or 1986 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 63.

The square root of 199996758 is about 14142.0210012572. The cubic root of 199996758 is about 584.8003877370.

The spelling of 199996758 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, seven hundred fifty-eight".