220350405 has 16 divisors (see below), whose sum is σ = 384611904. Its totient is φ = 106836480.

The previous prime is 220350401. The next prime is 220350407. The reversal of 220350405 is 504053022.

It is not a de Polignac number, because 220350405 - 2² = 220350401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220350401) 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 15 ways as a sum of consecutive naturals, for example, 667564 + ... + 667893.

It is an arithmetic number, because the mean of its divisors is an integer number (24038244).

Almost surely, 2^220350405 is an apocalyptic number.

It is an amenable number.

220350405 is a deficient number, since it is larger than the sum of its proper divisors (164261499).

220350405 is a wasteful number, since it uses less digits than its factorization.

220350405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335476.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 220350405 is about 14844.2044246231. The cubic root of 220350405 is about 604.0014080124.

The spelling of 220350405 in words is "two hundred twenty million, three hundred fifty thousand, four hundred five".