206641422 has 64 divisors (see below), whose sum is σ = 505128960. Its totient is φ = 62219232.

The previous prime is 206641417. The next prime is 206641439. The reversal of 206641422 is 224146602.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29863 + ... + 36125.

It is an arithmetic number, because the mean of its divisors is an integer number (7892640).

Almost surely, 2^206641422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206641422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252564480).

206641422 is an abundant number, since it is smaller than the sum of its proper divisors (298487538).

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

206641422 is a wasteful number, since it uses less digits than its factorization.

206641422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6334 (or 6328 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 206641422 is about 14375.0277217124. The cubic root of 206641422 is about 591.2064006337.

The spelling of 206641422 in words is "two hundred six million, six hundred forty-one thousand, four hundred twenty-two".