196889886 has 64 divisors (see below), whose sum is σ = 466905600. Its totient is φ = 61285248.

The previous prime is 196889881. The next prime is 196889933. The reversal of 196889886 is 688988691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196889881) 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, 126831 + ... + 128373.

It is an arithmetic number, because the mean of its divisors is an integer number (7295400).

Almost surely, 2^196889886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196889886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233452800).

196889886 is an abundant number, since it is smaller than the sum of its proper divisors (270015714).

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

196889886 is a wasteful number, since it uses less digits than its factorization.

196889886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710 (or 1704 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 63.

The square root of 196889886 is about 14031.7456504884. The cubic root of 196889886 is about 581.7563545999.

The spelling of 196889886 in words is "one hundred ninety-six million, eight hundred eighty-nine thousand, eight hundred eighty-six".