199026688 has 48 divisors (see below), whose sum is σ = 454839840. Its totient is φ = 85291008.

The previous prime is 199026679. The next prime is 199026721. The reversal of 199026688 is 886620991.

It is a happy number.

It is a super-2 number, since 2×199026688² = 79223245072498688, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7395 + ... + 21277.

It is an arithmetic number, because the mean of its divisors is an integer number (9475830).

Almost surely, 2^199026688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199026688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227419920).

199026688 is an abundant number, since it is smaller than the sum of its proper divisors (255813152).

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

199026688 is an equidigital number, since it uses as much as digits as its factorization.

199026688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13912 (or 13892 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 199026688 is about 14107.6818790331. The cubic root of 199026688 is about 583.8533440463.

The spelling of 199026688 in words is "one hundred ninety-nine million, twenty-six thousand, six hundred eighty-eight".