3220432440 has 64 divisors (see below), whose sum is σ = 9665170560. Its totient is φ = 858437760.

The previous prime is 3220432421. The next prime is 3220432463. The reversal of 3220432440 is 442340223.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3220432440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468307 + ... + 475133.

It is an arithmetic number, because the mean of its divisors is an integer number (151018290).

Almost surely, 2^3220432440 is an apocalyptic number.

3220432440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3220432440 is an abundant number, since it is smaller than the sum of its proper divisors (6444738120).

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

3220432440 is a wasteful number, since it uses less digits than its factorization.

3220432440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10772 (or 10768 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 3220432440 is about 56748.8540853470. The cubic root of 3220432440 is about 1476.7423539302.

Adding to 3220432440 its reverse (442340223), we get a palindrome (3662772663).

The spelling of 3220432440 in words is "three billion, two hundred twenty million, four hundred thirty-two thousand, four hundred forty".