3220123440 has 80 divisors (see below), whose sum is σ = 10119182688. Its totient is φ = 846931968.

The previous prime is 3220123399. The next prime is 3220123447. The reversal of 3220123440 is 443210223.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (3220123447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74379 + ... + 109418.

Almost surely, 2^3220123440 is an apocalyptic number.

3220123440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3220123440 is an abundant number, since it is smaller than the sum of its proper divisors (6899059248).

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

3220123440 is a wasteful number, since it uses less digits than its factorization.

3220123440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183886 (or 183880 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 3220123440 is about 56746.1314981030. The cubic root of 3220123440 is about 1476.6951213518.

Adding to 3220123440 its reverse (443210223), we get a palindrome (3663333663).

The spelling of 3220123440 in words is "three billion, two hundred twenty million, one hundred twenty-three thousand, four hundred forty".