206151822 has 48 divisors (see below), whose sum is σ = 453817728. Its totient is φ = 67626000.

The previous prime is 206151797. The next prime is 206151851. The reversal of 206151822 is 228151602.

It is a happy number.

206151822 is a `hidden beast` number, since 20 + 615 + 1 + 8 + 22 = 666.

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 23 ways as a sum of consecutive naturals, for example, 465133 + ... + 465575.

It is an arithmetic number, because the mean of its divisors is an integer number (9454536).

Almost surely, 2^206151822 is an apocalyptic number.

206151822 is an abundant number, since it is smaller than the sum of its proper divisors (247665906).

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

206151822 is a wasteful number, since it uses less digits than its factorization.

206151822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 206151822 is about 14357.9880902583. The cubic root of 206151822 is about 590.7391120071.

The spelling of 206151822 in words is "two hundred six million, one hundred fifty-one thousand, eight hundred twenty-two".