218050806 has 32 divisors (see below), whose sum is σ = 466093440. Its totient is φ = 67765376.

The previous prime is 218050793. The next prime is 218050817. The reversal of 218050806 is 608050812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925 + ... + 20903.

It is an arithmetic number, because the mean of its divisors is an integer number (14565420).

Almost surely, 2^218050806 is an apocalyptic number.

218050806 is an abundant number, since it is smaller than the sum of its proper divisors (248042634).

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

218050806 is a wasteful number, since it uses less digits than its factorization.

218050806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20108.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 218050806 is about 14766.5434682596. The cubic root of 218050806 is about 601.8929162776.

The spelling of 218050806 in words is "two hundred eighteen million, fifty thousand, eight hundred six".