196991088 has 160 divisors (see below), whose sum is σ = 623769600. Its totient is φ = 52316928.

The previous prime is 196991083. The next prime is 196991099. The reversal of 196991088 is 880199691.

It is a happy number.

196991088 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 196991088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196991083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 376395 + ... + 376917.

It is an arithmetic number, because the mean of its divisors is an integer number (3898560).

Almost surely, 2^196991088 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 196991088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311884800).

196991088 is an abundant number, since it is smaller than the sum of its proper divisors (426778512).

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

196991088 is a wasteful number, since it uses less digits than its factorization.

196991088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 51.

The square root of 196991088 is about 14035.3513671728. The cubic root of 196991088 is about 581.8560123721.

The spelling of 196991088 in words is "one hundred ninety-six million, nine hundred ninety-one thousand, eighty-eight".