4312440220 has 24 divisors (see below), whose sum is σ = 9879409008. Its totient is φ = 1568160000.

The previous prime is 4312440217. The next prime is 4312440227. The reversal of 4312440220 is 220442134.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 4312440191 and 4312440200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4312440227) 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, 9800781 + ... + 9801220.

It is an arithmetic number, because the mean of its divisors is an integer number (411642042).

Almost surely, 2^4312440220 is an apocalyptic number.

It is an amenable number.

4312440220 is an abundant number, since it is smaller than the sum of its proper divisors (5566968788).

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

4312440220 is a wasteful number, since it uses less digits than its factorization.

4312440220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19602021 (or 19602019 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4312440220 is about 65669.1725240999. The cubic root of 4312440220 is about 1627.6999967373.

Adding to 4312440220 its reverse (220442134), we get a palindrome (4532882354).

The spelling of 4312440220 in words is "four billion, three hundred twelve million, four hundred forty thousand, two hundred twenty".