220340424 has 32 divisors (see below), whose sum is σ = 551214720. Its totient is φ = 73398336.

The previous prime is 220340399. The next prime is 220340431. The reversal of 220340424 is 424043022.

It is a self number, because there is not a number n which added to its sum of digits gives 220340424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71034 + ... + 74070.

It is an arithmetic number, because the mean of its divisors is an integer number (17225460).

Almost surely, 2^220340424 is an apocalyptic number.

220340424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220340424 is an abundant number, since it is smaller than the sum of its proper divisors (330874296).

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

220340424 is a wasteful number, since it uses less digits than its factorization.

220340424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069 (or 6065 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 220340424 is about 14843.8682290028. The cubic root of 220340424 is about 603.9922882515.

Adding to 220340424 its reverse (424043022), we get a palindrome (644383446).

The spelling of 220340424 in words is "two hundred twenty million, three hundred forty thousand, four hundred twenty-four".