220973805 has 128 divisors (see below), whose sum is σ = 450455040. Its totient is φ = 102021120.

The previous prime is 220973791. The next prime is 220973807. The reversal of 220973805 is 508379022.

It is a happy number.

It is not a de Polignac number, because 220973805 - 2⁴ = 220973789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220973805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220973807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2662294 + ... + 2662376.

It is an arithmetic number, because the mean of its divisors is an integer number (3519180).

Almost surely, 2^220973805 is an apocalyptic number.

It is an amenable number.

220973805 is an abundant number, since it is smaller than the sum of its proper divisors (229481235).

220973805 is a wasteful number, since it uses less digits than its factorization.

220973805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 220973805 is about 14865.1876880179. The cubic root of 220973805 is about 604.5704712528.

The spelling of 220973805 in words is "two hundred twenty million, nine hundred seventy-three thousand, eight hundred five".