220640350 has 48 divisors (see below), whose sum is σ = 493718400. Its totient is φ = 71664480.

The previous prime is 220640339. The next prime is 220640351. The reversal of 220640350 is 53046022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220640351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9940 + ... + 23239.

It is an arithmetic number, because the mean of its divisors is an integer number (10285800).

Almost surely, 2^220640350 is an apocalyptic number.

220640350 is an abundant number, since it is smaller than the sum of its proper divisors (273078050).

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

220640350 is a wasteful number, since it uses less digits than its factorization.

220640350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33217 (or 33212 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 220640350 is about 14853.9674834705. The cubic root of 220640350 is about 604.2662141689.

Adding to 220640350 its reverse (53046022), we get a palindrome (273686372).

The spelling of 220640350 in words is "two hundred twenty million, six hundred forty thousand, three hundred fifty".