206621372 has 12 divisors (see below), whose sum is σ = 361691736. Its totient is φ = 103280880.

The previous prime is 206621347. The next prime is 206621377. The reversal of 206621372 is 273126602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206621377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17222 + ... + 26642.

It is an arithmetic number, because the mean of its divisors is an integer number (30140978).

Almost surely, 2^206621372 is an apocalyptic number.

It is an amenable number.

206621372 is a deficient number, since it is larger than the sum of its proper divisors (155070364).

206621372 is a wasteful number, since it uses less digits than its factorization.

206621372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14908 (or 14906 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 206621372 is about 14374.3303148355. The cubic root of 206621372 is about 591.1872788274.

Adding to 206621372 its reverse (273126602), we get a palindrome (479747974).

The spelling of 206621372 in words is "two hundred six million, six hundred twenty-one thousand, three hundred seventy-two".