220108806 has 32 divisors (see below), whose sum is σ = 514876800. Its totient is φ = 69507720.

The previous prime is 220108793. The next prime is 220108807. The reversal of 220108806 is 608801022.

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

It is a self number, because there is not a number n which added to its sum of digits gives 220108806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220108807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106240 + ... + 108291.

It is an arithmetic number, because the mean of its divisors is an integer number (16089900).

Almost surely, 2^220108806 is an apocalyptic number.

220108806 is an abundant number, since it is smaller than the sum of its proper divisors (294767994).

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

220108806 is a wasteful number, since it uses less digits than its factorization.

220108806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214561 (or 214555 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 220108806 is about 14836.0643703106. The cubic root of 220108806 is about 603.7805786758.

Adding to 220108806 its reverse (608801022), we get a palindrome (828909828).

The spelling of 220108806 in words is "two hundred twenty million, one hundred eight thousand, eight hundred six".