206228642 has 8 divisors (see below), whose sum is σ = 309408336. Its totient is φ = 103092532.

The previous prime is 206228623. The next prime is 206228651. The reversal of 206228642 is 246822602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 206228599 and 206228608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6473 + ... + 21315.

It is an arithmetic number, because the mean of its divisors is an integer number (38676042).

Almost surely, 2^206228642 is an apocalyptic number.

206228642 is a deficient number, since it is larger than the sum of its proper divisors (103179694).

206228642 is a wasteful number, since it uses less digits than its factorization.

206228642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21792.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 206228642 is about 14360.6630069785. The cubic root of 206228642 is about 590.8124801725.

The spelling of 206228642 in words is "two hundred six million, two hundred twenty-eight thousand, six hundred forty-two".