220340430 has 24 divisors (see below), whose sum is σ = 572885352. Its totient is φ = 58757424.

The previous prime is 220340399. The next prime is 220340431. The reversal of 220340430 is 34043022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220340431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1224024 + ... + 1224203.

It is an arithmetic number, because the mean of its divisors is an integer number (23870223).

Almost surely, 2^220340430 is an apocalyptic number.

220340430 is an abundant number, since it is smaller than the sum of its proper divisors (352544922).

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

220340430 is a wasteful number, since it uses less digits than its factorization.

220340430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448240 (or 2448237 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 220340430 is about 14843.8684311065. The cubic root of 220340430 is about 603.9922937338.

Adding to 220340430 its reverse (34043022), we get a palindrome (254383452).

The spelling of 220340430 in words is "two hundred twenty million, three hundred forty thousand, four hundred thirty".