220440340 has 24 divisors (see below), whose sum is σ = 472776192. Its totient is φ = 86299680.

The previous prime is 220440331. The next prime is 220440347. The reversal of 220440340 is 43044022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220440347) 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 7 ways as a sum of consecutive naturals, for example, 116316 + ... + 118195.

It is an arithmetic number, because the mean of its divisors is an integer number (19699008).

Almost surely, 2^220440340 is an apocalyptic number.

220440340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220440340 is an abundant number, since it is smaller than the sum of its proper divisors (252335852).

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

220440340 is a wasteful number, since it uses less digits than its factorization.

220440340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234567 (or 234565 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 220440340 is about 14847.2334123230. The cubic root of 220440340 is about 604.0835702970.

Adding to 220440340 its reverse (43044022), we get a palindrome (263484362).

It can be divided in two parts, 220440 and 340, that added together give a triangular number (220780 = T₆₆₄).

The spelling of 220440340 in words is "two hundred twenty million, four hundred forty thousand, three hundred forty".